Stem Cell Research

Stem Cell Research
Follow up lang ito sa kabila... break na muna ako sa religion thread, .. he he he.. sa science and technology muna ako, at least dito mahirap komontra, kung may nakikita... maganda itong thread about biosphere, cover din ng evolution, biogenesis, abiogenesis, DNA, and stem cells, cloning etc..... Start ako sa Biosphere- puwedeng copy and paste dito? he he he!!! ano nga ba ito? biosphere n. The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life. The living organisms and their environment composing the biosphere. http://www.answers.com/topic/biosphere?method=8 --- biosphere Encyclopædia Britannica relatively thin life-supporting stratum of the Earth's surface, extending from a few kilometres into the atmosphere to the deep-sea vents of the ocean. The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients..... http://www.britannica.com/eb/article-9117266 Can i also add a poll, nakikigaya lang sa kabilang post ko, baka may response ako dito, napadayo si dro661 sa kabila eh!!

Frequently Asked Questions (FAQs)
Stem Cell Information Basic Questions What are human embryonic stem cells? Stem cells are cells that have the remarkable potential to develop into many different cell types in the body. Serving as a sort of repair system for the body, they can theoretically divide without limit to replenish other cells for as long as the person or animal is still alive. When a stem cell divides, each "daughter" cell has the potential to either remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell. A more detailed primer on stem cells can be found at http://stemcells.nih.gov/info/basics. What classes of stem cells are there? There are three classes of stem cells: totipotent, multipotent, and pluripotent. A fertilized egg is considered totipotent, meaning that its potential is total; it gives rise to all the different types of cells in the body. Stem cells that can give rise to a small number of different cell types are generally called multipotent. Pluripotent stem cells can give rise to any type of cell in the body except those needed to develop a fetus. Where do stem cells come from? Pluripotent stem cells are isolated from human embryos that are a few days old. Cells from these embryos can be used to create pluripotent stem cell "lines" —cell cultures that can be grown indefinitely in the laboratory. Pluripotent stem cell lines have also been developed from fetal tissue obtained from fetal tissue (older than 8 weeks of development). Why do scientists want to use stem cell lines? Once a stem cell line is established from a cell in the body, it is essentially immortal, no matter how it was derived. That is, the researcher using the line will not have to go through the rigorous procedure necessary to isolate stem cells again. Once established, a cell line can be grown in the laboratory indefinitely and cells may be frozen for storage or distribution to other researchers. Stem cell lines grown in the lab provide scientists with the opportunity to "engineer" them for use in transplantation or treatment of diseases. For example, before scientists can use any type of tissue, organ, or cell for transplantation, they must overcome attempts by a patient's immune system to reject the transplant. In the future, scientists may be able to modify human stem cell lines in the laboratory by using gene therapy or other techniques to overcome this immune rejection. Scientists might also be able to replace damaged genes or add new genes to stem cells in order to give them characteristics that can ultimately treat diseases. http://stemcells.nih.gov/info/faqs.asp#whatare The official National Institutes of Health resource for stem cell research

IVF-in vitro fertilization/PGD-preimplantation genetic diagnosis It helps to understand the work involved in here when you had directly talked to some scientists who works in this field. It's an opportunity, though its not free.... he he h e!! Next time, I will make sure to get my money worth, as I was not quite happy the turn out that we've been expecting, as I don't quite understand how they operated and the system they used, so next time I use their service, i know the right questions to ask. hey.. don't get me wrong, we are still in the basic level, hehehe...PGD-Pre-implantation genetic Diagnosis pa lang tayo. we are just talking about the future here, the idea of a designer baby.. he hehe.. and the potential of what stem cell research can offer. The la-*test*-('") that this local scientist that we talked to, she said that PGD will be absolete.... ano?? its been here for 10-15 years pa lang pero tatagngalin na nila, its 5 years old pa lang in australia, becuase the current process that they do is invasive, they took one cell out of dividing cell of an embryo, of course, it has less harm if successful... the next level that that they are moving up, is the use a DNA without removing any cell, whoaaaaaaaaaa... imagine, those microscopic embryo, pala also shedding some excess layers ( it's like our skin) and those can be use to check DNA, without invading the embryo.. grabeee.... ang technology talaga??? ... just imagine, those embryo in a few days old are microscopic size, soon, they can pick up 1000XXXXX smaller of a single cell.

Biogensis vs. Abiogenesis Teka sandali, before we move on to eugenics, sex selection, cloning and other works and possibility of stem cell research, I think, umpisa muna tayo sa biogenesis... at para walang controversial, we just define it as commonly known as “life arise from life”. Mas controversial kasi iyang Abiogenesis, maraming magagalit kung mapapatunayan ito, one of the problem that no one can prove that no life came from dead matter is that it supposedly couldl take hundred of years before a simple inorganic will evolve into organic. he hehe… because if they can prove that, many are not ready to accept that we do came from simple organism, simple organism that are made of simple cells diba?. so tabi na muna iyan. he he he!!!

Fetal Development Development of the Embryo and Fetus Some of you maybe had seen this on my home forum. he he he… Great site about fetal development and pictures.. http://www.wprc.org/trimester1.phtml dare to ask me again .... “prove us that once we had a tail” . eto o…

5 weeks Embryo is the size of a raisin. By day twenty-one, the embryo's tiny heart has begun beating. The neural tube enlarges into three parts, soon to become a very complex brain. The placenta begins functioning. The spine and spinal cord grows faster than the rest of the body at this stage and give the appearance of a tail. This disappears as the child continues to grow. http://www.wprc.org/trimester1.phtml

DNA has already create as soon as the sperm cell and egg had fertilize..interesting!! Pregnancy & Fetal Development -------------------------------------------------------------------------------- Pregnancy occurs when a sperm cell fuses its nucleus (DNA) with the nucleus of an egg cell. The resulting cell is called a zygote. The typical human pregnancy lasts 38 weeks (measured from date of fertilization). A developing baby is referred to as an embryo for the first nine weeks of development; after that, the baby is referred to as a fetus until it is born. Pregnancy is divided into three phases, called trimesters. Each trimester is characterized by certain events, which are described below. Pregnancy ends with labor and childbirth. EVENTS OF PREGNANCY First Trimester = rapid cell division, formation of major organ systems and body parts; by the end of the first trimester, all major organ systems have formed (although not all are functional) Second Trimester = very rapid growth of the fetus, organs continue to mature and come "on-line". Third Trimester = continued growth, maturation and completion of organ systems in preparation for birth http://facstaff.uww.edu/wentzl/pregnancy.html

DNA and mutant topic later on Webbed foot in a growing embryo.

Why do cells kill themselves? As you grew in your mother's womb, apoptosis was vital for your early development. For example your feet were webbed to begin with and rows of cells died between your toes to separate them. When your brain was developing, more than half of its early nerve cells sacrificed themselves. As adults, apoptosis helps keep all our organs the right size - as new cells grow, old ones die. It is also crucial for a healthy immune system: apoptosis weeds out ineffective white blood cells. http://www.sciencemuseum.org.uk/exhibitions/lifecycle/170.asp Just come to think of this, each moment is a constant change, it applies to everything matter we have in this universe. sorry, I can't avoid not to mentioned this philosophy of mine.. one law that I know that never change, is that our universal law is "Nothing stays the same".

New cells grow, Old ones die Did anyone heard of our early ancestors finger print in Lascaux Cave in France? Noticed any resemblance in this pictures? They said, that our early ancestors had a short finger than we have today, proven to see in early age of a fetus.

Trying to reconnect this ...... take note yung fingers and toes, almost similar at early stage, now, i can understand why we didn't develop longer toes and thumb on our feet.. he hehe.. this is the most important part that separated us from animals, we learn the use of tools. Our feet and toes are specially use for walking only, so we don't need the grip there. he he he.... As I mentioned above, embryo in early days shed some part of their layers, as mentioned in the site, apoptosis is important part of our evolution, ( needs to learn more technical name.. he hehe) old cells die, and new one is create with a little change each time. apoptosis Disintegration of cells into membrane-bound particles that are then eliminated by phagocytosis or by shedding. http://www.answers.com/apoptosis?gwp=11&ver=1.0.4.128&method=3 This is the answer why we keep evolving and changing. This is program by our DNA which is responsible to control which cells of our body parts should die and create a new one. For obvious reasons, the key word of changeover as Darwin described, is about TIME and Environment (or space).

DNA and bases I don't know if some people are confuse or I'm confuse.. he he he.. check this one out.... ayokong i-paste, bahala na kayo kung gusto ninyo makinig dito.... he hehe.. http://www.suite101.com/article.cfm/revival/70517 some believers believe with the Law of Biogenesis, becuase it meant that Living arises from living only, contradictory of abiogenesis. But they don't believe in evolution that all living matter started as a microorganism. All simple organism are simple cells that made of simple elements combine with other elements given the right environment is capable of replicating itself, and given the right time and environment, it could turn out like a monkey.. he hehe..e!! do they know that organic whether it is animals or plants or bacteria etc.. started the same as a single cell and all cells has the same building block of amino acid of a protein, all every cells contain all the genetic information whenever that cells belongs to, now we know that is DNA discovered 50 years ago. RNA is another nucleic acid molecule which function to build the cells such as transmitting the DNA and control the chemical reactions of a cell, so kung titingnan natin, and go down to a simple level, their bases are just simple elements. Natatandaan ba ninyo yung chemistry ninyo? he he he..

on the third day of fertilization, scientist suck one of the cells for DNA -*test*-('")ing, at this stage, they already know the genetic information of the embryo, such as sex and kown diseases. With the PGD, this diagnosis will give a couple an option if they wish to carry on the implantation or not if there are some disease found.

edited remember, this is just cells, it has no distinctive form yet, and it has not defined what kind of body parts they will become at this age. next stage, it a revelation ... everything is there waiting to be seen and to be notice... hey i look like this , not what you think of.. I promise guyss.. he hehe..

saan na ba tayo?.. sorry ang gulo ko.. start tayo ulit from the beginning... Law of Biogenesis applies to all animals, in the early development, they all started the same and look very similar. Stem Cell research are using small animals as their model to come up with a theory that can be applied to human . Smaller animals have a short lifespan like mouse and rats ,they can observe its progression during it gestations in a shorter period.

comparison of emrbyo's early development, if i should get some better pictures than this.. soon edited.

http://images.google.com/images?q=tbn:0snQyrbgpFsJ:www.hcc.hawaii.edu/~pine/book1qts/embryo-compare.jpg

Did you know that apes has the degree of similarity to human's DNA is between 98 and 99 per cent? if taken an Xray , just visual check, doctors can't identify which one is fetus belongs to human or ape.. on its 3 months, has complete distingishing human parts..

there's a few good site to check every stages with good graphics and computer simulations, etc.., its worth your time... http://embryology.med.unsw.edu.au/wwwhuman/Hum10wk/Hum10wk.htm http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0007836.html http://gallery.art.elon.edu/poet/dayesjourney/pag2.html http://slv80.tripod.com/TheProLifeWoman/Prenatal/outline.htm

the most revealing that I found out when we had spoken to our doctor and PGD scientist, is that after the division of the embryo and became a blastocyst- when all the dividing cells became solid again.. like this one..

at his time, 5 days old, in blastula stage, must be implant if going thru IVF, as it can't no longer survive outside the uterus, its ready for hatching.

take note of the 25 hours stage... it's starting to look like a seed....

embryo will plant itself inside the wall of the uterus
This is the most fascinating for me.. Did you know that this embryo will disappear outside the surface of the uterus for a while? Take note that it will plant itself and created a root on the uterus wall, parang seed.... woowwwww!!!! coooolll!!!! he heh e he!!.... 3 weeks Once in the uterus, the developing embryo, called a blastocyst, searches for a nice place to implant, where it actually burrows beneath the surface of the uterus......................... http://www.wprc.org/trimester1.phtml What is the most surprising when i saw this and how the doctor explained it was, it look like a seed.... then it will come out like a mung bean spout... you may find different photos, but the theory is there... he hehe..

here is the diagramm http://www.zum.de/Faecher/Materialien/hupfeld/Entwicklung/Mensch-ueberblick/ei-woche-16/humneur.html

It became a parasite upon it burrows beneath the surface of uterus wall, parang seed na nakatago sa lupa, then tumubo na, disks are being form, soon enough .. yung kalahati ng brain and backbone will joint to become part of spinal cord and tail... kaya some IVF were not successful after this stage..... now the la-*test*-('") technology was released recently is a "glue" to make sure that the embryo will stay to the uterus wall. As they can be easily wash out, in many reasons,e.g some women can still have some bleeding or it's like a light menstration which could be normal to some women. Women menstration is cause by shedding of the uterus wall, its like changing it's skin, ready for the next ovulation and fertilization etc.

below are 2 types of plant embryo...experimented hybrid seed embryos

then 4 weeks, its starting to form and shape like any simple animal.

O heto na po ang controversial.... are u ready for this??? Notice the picture above showing the human embryo with tail and gill slilts?? he he he.. kawawa naman yung bata kung makikinig sa pare at magulang and their bad science…he he he.. sus.. magmula sa noah’s ark, Law of thermodynamics- entropy, at law of Biogenesis eh I-dedeny pa.. Scientific laws and theories were not made to offend any institutions. look at this… first from your local church Human Embryo "Gill Slits" During Development By David N. Menton (C) copyright 1991 Missouri Association for Creation, Inc. HUMAN EMBRYOS HAVE "GILL SLITS" AT ONE STAGE OF THEIR DEVELOPMENT PROVING THAT MAN EVOLVED FROM AQUATIC, FISH AND AMPHIBIAN, ANCESTORS You can hardly attend high school or college now days with out hearing or reading this "whopper". In fact, neither gills nor their slits are found at any stage in the embryological development of any mammal including man. The folds in the neck region of the mammalian embryo, that are erroneously called "gills", are not gills in any sense of the word and never have anything to do with breathing. They are merely flexion folds, or wrinkles, in the neck region resulting from the sharply down turned head and protruding heart of the developing embryo. These folds eventually develop into a portion of the face, inner ear, tonsils, parathyroid and thymus. No reputable medical embryology text claims that there are "gill slits" in mammals. Still, the gill slit myth is perpetuated in many high school and college biology text books as "scientific evidence" for evolution. Even Dr. Spock in his book 'Baby and Child Care' claims that "as the baby lies in the amniotic fluid of the womb, he has gills like a fish." Perhaps the "gill slit" myth continues to be taught because there is no better "evidence" for evolution. How many of you were taught the gill slit myth in school?? http://www.gennet.org/facts/metro06.html eto galing sa state government site, NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators. Argonne National Laboratory, Division of Educational Programs, Harold Myron, Ph.D., Division Director. Humans and Gills name Shelley age 20s Question - Is it true that some babies are born with some sort of gills? How and when do humans adapt from breathing inside to breathing outside of the womb? ------------------------------------------------ Whoa! You have received a great deal of false information. First, babies are not born with gills! Get that out of your thinking! Babies do not "breath" for oxygen in the womb. They do "practice breathing" using the amniotic fluid of the womb, but it is not doing them any good otherwise. All of the embryo and fetal needs are received through the placenta. The mother provides everything that is needed. As for the gills, there is a stage in the early human embryo development whereby humans do show gill slits, but not functional gills. Slits are not gills!! As a matter of fact, all vertebrates show these same gill slits. Steve Sample ========================================================= At some point in development, all vertebrates have gill slits. However, babies do not BREATHE in the womb. They get their oxygen and nutrients from the mother through the placenta. The baby doesn't begin to "breathe" until it is born. http://www.newton.dep.anl.gov/askasci/bio99/bio99850.htm

View Full Version: Stem Cell Research