THE INCIDENCE AND TYPE OF CHROMOSOMAL
TRANSLOCATIONS FROM PRENATAL DIAGNOSIS
OF 3800 PATIENTS IN THE REPUBLIC OF MACEDONIA
Vasilevska M1,*, Ivanovska E1, Kubelka Sabit K1, Sukarova-Angelovska E2, Dimeska G3
*Corresponding Author: Marinela Vasilevska, M.Sc., Department of Diagnostic Laboratories, Clinical Hospital
Acibadem-Sistine, Skupi 5A, 1000 Skopje, Republic of Macedonia; Tel.: +389-2-3099-511; Fax: +389-2-
3099-599; vasilevskam@acibademsistina.com.mk
page: 23
|
|
INTRODUCTION
Constitutive chromosome translocations are the
most frequent structural chromosomal abnormalities
in humans. There are Robertsonian translocations
involving acrocentric chromosomes, reciprocal
translocations between auto-some chromosomes or
sex chromosome translocations. All types of translocations
may be presented in balanced and unbalanced
states. Mental and physical abnormalities can
be expected when the translocation is in an unbalanced
state. On the other hand, the phenotype of the
balanced translocation carriers is usually normal
and the transloca-tion may pass undetected through
generations. The birth of a child with an unbalanced
form of translocation or infertility in the carriers,
usually reveals the existence of a familial chromosomal
translocation [1]. Gametogenesis of the carries
is affected by forming trivalents (Robertsonian
translocations) or quadrivalents (reciprocal translocations)
between translocated and normal chromosomes.
The type of gametes produced in meiosis
depends on the mode of chromosome segregation.
Only alternate segregation can produce normal or
gametes with translocations in a balanced state. All
other modes can be classified as malseg-regation,
because of production of unbalanced gametes [2].
Genetic counseling, risk estimation and prenatal cyto-
genetic diagnosis are required for the carriers of
known balanced chromosomal translocations.
|
|
|
|
 |
Number 27
VOL. 27 (2), 2024 |
Number 27
VOL. 27 (1), 2024 |
Number 26
Number 26 VOL. 26(2), 2023 All in one |
Number 26
VOL. 26(2), 2023 |
Number 26
VOL. 26, 2023 Supplement |
Number 26
VOL. 26(1), 2023 |
Number 25
VOL. 25(2), 2022 |
Number 25
VOL. 25 (1), 2022 |
Number 24
VOL. 24(2), 2021 |
Number 24
VOL. 24(1), 2021 |
Number 23
VOL. 23(2), 2020 |
Number 22
VOL. 22(2), 2019 |
Number 22
VOL. 22(1), 2019 |
Number 22
VOL. 22, 2019 Supplement |
Number 21
VOL. 21(2), 2018 |
Number 21
VOL. 21 (1), 2018 |
Number 21
VOL. 21, 2018 Supplement |
Number 20
VOL. 20 (2), 2017 |
Number 20
VOL. 20 (1), 2017 |
Number 19
VOL. 19 (2), 2016 |
Number 19
VOL. 19 (1), 2016 |
Number 18
VOL. 18 (2), 2015 |
Number 18
VOL. 18 (1), 2015 |
Number 17
VOL. 17 (2), 2014 |
Number 17
VOL. 17 (1), 2014 |
Number 16
VOL. 16 (2), 2013 |
Number 16
VOL. 16 (1), 2013 |
Number 15
VOL. 15 (2), 2012 |
Number 15
VOL. 15, 2012 Supplement |
Number 15
Vol. 15 (1), 2012 |
Number 14
14 - Vol. 14 (2), 2011 |
Number 14
The 9th Balkan Congress of Medical Genetics |
Number 14
14 - Vol. 14 (1), 2011 |
Number 13
Vol. 13 (2), 2010 |
Number 13
Vol.13 (1), 2010 |
Number 12
Vol.12 (2), 2009 |
Number 12
Vol.12 (1), 2009 |
Number 11
Vol.11 (2),2008 |
Number 11
Vol.11 (1),2008 |
Number 10
Vol.10 (2), 2007 |
Number 10
10 (1),2007 |
Number 9
1&2, 2006 |
Number 9
3&4, 2006 |
Number 8
1&2, 2005 |
Number 8
3&4, 2004 |
Number 7
1&2, 2004 |
Number 6
3&4, 2003 |
Number 6
1&2, 2003 |
Number 5
3&4, 2002 |
Number 5
1&2, 2002 |
Number 4
Vol.3 (4), 2000 |
Number 4
Vol.2 (4), 1999 |
Number 4
Vol.1 (4), 1998 |
Number 4
3&4, 2001 |
Number 4
1&2, 2001 |
Number 3
Vol.3 (3), 2000 |
Number 3
Vol.2 (3), 1999 |
Number 3
Vol.1 (3), 1998 |
Number 2
Vol.3(2), 2000 |
Number 2
Vol.1 (2), 1998 |
Number 2
Vol.2 (2), 1999 |
Number 1
Vol.3 (1), 2000 |
Number 1
Vol.2 (1), 1999 |
Number 1
Vol.1 (1), 1998 |
|
|
