Presentation is loading. Please wait.

Presentation is loading. Please wait.

Dr. Derakhshandeh, PhD PND & PGD Prenatal Diagnosis Preimplantation Diagnosis.

Similar presentations


Presentation on theme: "Dr. Derakhshandeh, PhD PND & PGD Prenatal Diagnosis Preimplantation Diagnosis."— Presentation transcript:

1 Dr. Derakhshandeh, PhD PND & PGD Prenatal Diagnosis Preimplantation Diagnosis

2 KARYOTYPING genome mutations: changes in chromosome number changes in chromosome number

3 Technique Karyotyping, conventional cytogenetics

4 Down Syndrome (Trisomy 21( Trisomy 2(

5 Down Syndrome (Trisomy 21(

6

7

8 Trisomy 18, 47 Ch

9 chromosome mutations: changes in chromosome structure

10 CHANGES IN CHROMOSOME STRUCTURE  Translocations  Large Deletions/Insertions  Inversions  Duplications/Amplifications

11 DiGeorge/Velo-Cardio-Facial/CATCH 22/Shprintzen Syndrome which is caused by a microdeletion on chromosome 22

12 painting" probe for chromosome 4q

13 A probe for the terminal part of chromosome 4q.

14 probe for Steroid Sulfatase Deficiency which is caused by a microdeletion on the X chromosome. The "Xp22.3" probe signal is located at the Steroid Sulfatase region at Xp22.3. Since there are two X chromosomes and only one has the Steroid Sulfatase gene signal.

15 Interphase FISH Examples 13 (green), and 21 (red) 18 (aqua), X (green), and Y (red).

16 female fetus with trisomy-21 chromosomes 18 (aqua), X (green), and Y (red). chromosomes 13 (green), and 21 (red) chromosomes 13 (green), and 21 (red)

17 Detection of trisomy 21 by HGQ-PCR Lanes 1–16 Serial dilutions for a normal individual and aDown’s syndrome patient HGQPCR (quantitative fluorescece)

18 PND & PGD   -Thalassemia/  -Thalassemia Haemophilia (A / B) HbD, G, E, S DMD/BMD SMA(I-III) CF; Fragile X, MD, HD, charct-Mari- Tooth

19 PGD Translocation Inversion Deletion At least 2 independent blastromers/embryo

20 A limiting Factor in PGD Chromosome abnormalities # 70-100 % Reduce the success of PGD

21 Rules and legislation of PGD HLA typing A child as suitable donor to an already existing child Social sexing …


Download ppt "Dr. Derakhshandeh, PhD PND & PGD Prenatal Diagnosis Preimplantation Diagnosis."

Similar presentations


Ads by Google