Genetic infertility treated successfully at Mumbai hospital

November 24, 2010

Courtesy: dnaindia.com

A woman with a rare genetic disorder ‘Robertsonian Translocation’, resulting in infertility, has delivered a healthy baby girl at the Jaslok Hospital and Research Center.

“With this first Invitro fertilisation (IVF) using pre-implantation genetic diagnosis (PGD), India joins a handful of countries that have accomplished successful management of this disorder,” Dr Firuza Parikh, Director, Assisted Reproduction and Genetics at Jaslok and former Professor at the Yale University School of Medicine, USA, said.

The baby girl was delivered yesterday at city’s Jaslok hospital, Parikh said adding that this case report was published as a cover article in the peer reviewed ‘Journal of Prenatal Diagnosis and Therapy’ (January- June 2010).

Attributing the success to her team of 40 individuals particularly Dr Prochi Madon, Dr Arundhati Athalye, Mr Nandkishor Naik and Dattatray Naik, Parikh explained, “We are born with 46 chromosomes which occur in pairs. Each chromosome of a pair is a mirror image of the other. Although this harmony ismaintained in nature, an occasional slip results in a translocation.”

“As the name suggests, a segment or an arm of one chromosome transports itself onto another chromosome and one such rearrangement is called a RobertsonianTranslocation after the American geneticist Dr W Robertson,” she said.

“The rearrangement can occur in males and females who do not manifest any clinical symptoms. The problem manifests when the couple tries to conceive,” Parikh said.

“An embryo derives half its chromosomes from the father and half from the mother. Hence if the chromosome with extra genetic material goes into the embryo, the amount of genetic material of that chromosome triples resulting in miscarriage or mental retardation,” the In-vitro fertilization (IVF) expert said.

The embryos were screened using Pre-implantation Genetic Diagnosis (PGD).

Eleven years ago, Parikh and Madon established PGD for genetic disorders for the first time in India at the Jaslok Hospital and Research Centre.

Parikh who led this procedure, said, “PGD requires years of perfection, team work and a thorough knowledge of reproductive biology and genetics. The couple first undergoes IMSI (intracytoplasmic morphologically selected sperm injection).

In this procedure the egg and the sperm are magnified 7000 times. With the help of a sharp pipette a single sperm is injected into the egg and the resulting embryo is ready for PGD when it reaches the eight cell stage.”

“A laser beam swiftly cuts open the shell of the embryo, a fine glass pipette is advanced towards one of the cells of the embryo. Using gentle suction, a single cell is aspirated. This cell is then processed by the genetics team,” Parikh said.

Madon, chief geneticist added, “The cell is put through an overnight procedure called Fluorescence In Situ Hybridisation (FISH), a procedure to zip open the DNA strands and attach coloured probes, to identify the chromosomes of interest.”

In this particular couple, the wife had a translocation between chromosomes 13 and 14. Two embryos underwent the procedure of PGD. This embryo was transferred into the mother’s womb, resulting in the birth of a healthy baby girl.

“PGD is an effective form of treatment for couples at a risk for Down Syndrome and other chromosomal abnormalities, for women approaching 40, those with repeated failed attempts at IVF/ICSI (Intracytoplasmic sperm injection), those women showing poor quality embryos and for severe male factor infertility. It is also helpful in some rare genetic diseases like haemophilia,” Parikh said.

“We are now in the process of setting up a facility for PGD to detect embryos at a risk of Thalassemia. We have also started offering this procedure routinely to couples undergoing IVF/ICSI in order to select normal embryos so that less number of embryos are transferred,” she said.

This will increase the chances of a normal pregnancy and decrease the chances of a miscarriage. This technique is called pre-implantation genetic screening (PGS), Parikh added.


Blood Donation Drive Aims to Help Children with Thalassemia

December 14, 2009

Courtesy by: Daijiworld.com

Mumbai, Dec 14: Vile Parle MLA Krishna Hegde, in association with Jagrut (an NGO), organized a blood donation drive at Parle Tilak Vidyalay in Vile Parle (East), on Sunday December 13.

The blood donation drive was held in response to the needs of children afflicted with Thalassemia.

Thalassemia is a hereditary blood disorder where the patients need to undergo regular blood transfusions since their body cannot produce enough haemoglobin. It afflicts approximately one lac people in India and nearly 10,000 to 20,000 people are annually diagnosed with it.

The average life span of a person suffering from Thalassemia major is low since there is no cure other than a bone marrow transplant and regular blood transfusions. Awareness is the only tool to battle this disorder as it is passed on only if both parents are Thalassemic minors.

The blood donation drive generated a good response and over 250 bottles of blood were collected and handed over to the blood bank of J J Hospital.

“We have to create awareness about Thalassemia. A blood test for Thalassemia minor should be taken by couples before marriage to avert this disorder and ensure that their child is not afflicted by Thalassemia”, said Hegde.

“Looking at the tremendous response, we will be organizing another blood donation drive shortly”, said Narendra Hirani, president of Jagrut Group.

Kripashankar Singh, president of MRCC, also attended the blood donation drive. Appreciation certificates and mementos were distributed to all the donors.


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