Monday, December 24, 2007

The Gujarati Boy

One day many years ago at a school in South London a teacher said to the class of 5-year-olds, "I'll give GBP 20 to the child who can tell me who was the most respected man, whom people consider God, who ever lived."

An Irish boy put his hand up and said, "It was St. Patrick." The teacher said, "Sorry Alan, that's not correct."

Then a Scottish boy put his hand up and said, "It was St. Andrew." The teacher replied, "I'm sorry, Hamish, that's not right either.

Finally, a Gujarati boy raised his hand and said, "It was Jesus Christ." The teacher said, "That's absolutely right, Jayant, come up here and I'll give you the GBP 20."

As the teacher was giving Jayant his money, she said, "You know Jayant, since you are Gujarati, I was very surprised you said Jesus Christ." Jayant replied, "Yes, in my heart I knew it was Lord Krishna, but business is business!"

Thursday, December 20, 2007

Klinefelter's Syndrome





Klinefelter's Syndrome is a genetic disorder characterized by infertility, abnormal male breast tissue development (gynecomastia) and small, firm testes. It is the most common cause of azoospermia (no sperm production). Klinefelter's Syndrome is caused by an abnormal number of sex chromosomes. Whereas a normal male genetic make-up includes one "X" chromosome and one "Y" chromosome, in patients with Klinefelter's Syndrome, an extra "X" chromosome is present, resulting in three (XXY) sex chromosomes. Thought at one time to be hopelessly infertile, it has been found that these men can have small amounts of sperm production occuring within the testicle. Our Center has successfully recovered sperm in men with this disorder who have gone on to father normal, healthy children. It is important that all men with very low or absent sperm counts be tested for Klinefelter's Syndrome before offering IVF and ICSI.

Wednesday, December 19, 2007

Glow-in-the-dark cats can help with gene therapy in the future




Last week South Korean scientists reported that they had successfully cloned cats whose genes had been altered so that they 'glow-in-the-dark' under UV light. It is hoped that the ability to alter genes in this way may help scientists discover how to make more complicated gene changes, allowing them to artificially create animals with human genetic diseases for carrying
out research into new treatments or cures. The discovery, made by researchers at Gyeongsang National University, is
significant because - with a duo of glow-in-the-dark cats as living proof - it marks the first time that scientists have successfully altered the genetic code of cloned cats. 'This technology can be applied to cloned animals suffering from the same diseases as humans', Kong Il-keun, who led the research, told AFP. 'It will also help develop stem cell treatments', he said, noting that cats have some 250 kinds of genetic diseases that affect humans, too. The technology can also help clone endangered animals like tigers, leopards and wildcats, Kong said.
The three cats - all Turkish Angoras - were created by taking skin cells from donor female cats and using a harmless virus to insert the gene for 'Red Fluorescent Protein' (RFP) into the nucleus of each cell, thereby altering its genetic code. The nuclei of the donor female's egg cells were then removed and replaced with the gene-altered nuclei of the skin cells, to
create a cloned embryo.
To find out if they had been successful in their attempt at creating gene-altered embryos, the researchers implanted the cloned embryos back into the donor females to show that the cloned kittens did indeed glow-in-the-dark, indicating that they expressed RFP in their skin. The three cats were reportedly born by Caesarian section in January and February of this year. Although one was a stillbirth, the scientists claim that it too had expressed the RFP protein throughout its body, indicating
that their methods had worked in all three cats. The scientists hope that the ability to create animals that mimic human diseases can speed up efforts to find treatment and drugs by allowing scientists to study animals and conduct experiments that are not possible with human patients. With the current price tag of tens of thousands of dollars to clone a single cat,
glow-in-the-dark pets are unlikely to become a commercial venture in the near future.The discovery was announced last week in a press release by the government managed Korea.net news service, however peer reviewed papers and
replications of the same experiment will be eagerly awaited to prove the validity of these results.