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Preimplantation genetic diagnosis

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https://www.readbyqxmd.com/read/28428361/single-tube-dodecaplex-pcr-panel-of-polymorphic-microsatellite-markers-closely-linked-to-the-dmpk-ctg-repeat-for-preimplantation-genetic-diagnosis-of-myotonic-dystrophy-type-1
#1
Mulias Lian, Mingjue Zhao, Caroline G Lee, Samuel S Chong
BACKGROUND: Preimplantation genetic diagnosis (PGD) of myotonic dystrophy type 1 (DM1) currently uses conventional PCR to detect nonexpanded dystrophia myotonica protein kinase (DMPK) alleles or triplet-primed PCR to detect the CTG-expanded alleles, coupled with analysis of linked microsatellite markers to increase diagnostic accuracy. We aimed to simplify the process of identification and selection of informative linked markers for application to DM1 PGD. METHODS: An in silico search was performed to identify all markers within 1-1...
April 20, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28421495/chapter-11-human-embryo-vitrification
#2
Juergen Liebermann
Cryopreservation is one of the keystones in clinical infertility treatment. In particular vitrification has become a well-established and widely used routine procedure that has allowed important expansion of therapeutic strategies when IVF is used to treat infertility. Vitrification of human blastocysts allows us to maximize the potential for conception from any single in vitro fertilization cycle and prevents wastage of embryos. The technology may even be used to eliminate fresh embryo transfers for reasons of convenience, uterine receptivity, fertility preservation, preimplantation genetic diagnosis, or emergency management...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28401070/simple-and-easy-to-perform-preimplantation-genetic-diagnosis-for-%C3%AE-thalassemia-major-using-combination-of-conventional-and-fluorescent-polymerase-chain-reaction
#3
Rasoul Salehi, Sharifeh Khosravi, Mansour Salehi, Majid Kheirollahi, Hossein Khanahmad
BACKGROUND: Thalassemias are the most common monogenic disorders in many countries throughout the world. The best practice to control the prevalence of the disease is prenatal diagnosis (PND) services. Extensive practicing of PND proved effective in reducing new cases but on the other side of this success high abortion rate is hided, which ethically unfair and for many couples, especially with a previous experience of a therapeutic abortion, or moral concerns, is not a suitable choice...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28390694/advanced-maternal-age-patients-benefit-from-preimplantation-genetic-diagnosis-of-aneuploidy
#4
EDITORIAL
Santiago Munné, Jacques Cohen
No abstract text is available yet for this article.
April 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28357616/prenatal-screening-for-chromosomal-abnormalities-in-ivf-patients-that-opted-for-preimplantation-genetic-screening-diagnosis-pgs-d-a-need-for-revised-algorithms-in-the-era-of-personalized-medicine
#5
Afua Takyi, Joaquin Santolaya-Forgas
Obstetricians offer prenatal screening for most common chromosomal abnormalities to all pregnant women including those that had in vitro fertilization (IVF) and preimplantation genetic screening/diagnosis (PGS/D). We propose that free fetal DNA in maternal circulation together with the second trimester maternal serum alfa feto protein (MSAFP) and ultrasound imaging is the best prenatal screening test for chromosomal abnormalities and congenital anomalies in IVF-PGD/S patients because risk estimations from all other prenatal screening algorithms for chromosomal abnormalities depend heavily on maternal age which is irrelevant in PGS/D patients...
March 29, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28347334/is-the-hypothesis-of-preimplantation-genetic-screening-pgs-still-supportable-a-review
#6
REVIEW
Norbert Gleicher, Raoul Orvieto
The hypothesis of preimplantation genetic diagnosis (PGS) was first proposed 20 years ago, suggesting that elimination of aneuploid embryos prior to transfer will improve implantation rates of remaining embryos during in vitro fertilization (IVF), increase pregnancy and live birth rates and reduce miscarriages. The aforementioned improved outcome was based on 5 essential assumptions: (i) Most IVF cycles fail because of aneuploid embryos. (ii) Their elimination prior to embryo transfer will improve IVF outcomes...
March 27, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28346418/first-experience-of-hematopoietic-stem-cell-transplantation-treatment-of-shwachman-diamond-syndrome-using-unaffected-hla-matched-sibling-donor-produced-through-preimplantation-hla-typing
#7
A A Isaev, R V Deev, A Kuliev, I L Plaxa, N V Stancheva, A S Borovkova, I V Potapov, E A Pomerantseva, A G Chogovadze, K Y Boyarsky, A E Semenenko, A V Mikhailov, K G Shevchenko, A V Prikhodko, S Rechitsky, O V Paina, I M Barchatov, L S Zubarovskaya, O Verlinsky, I Y Bozo, B V Afanasyev
The only proven cure for Shwachman-Diamond syndrome (SDS) bone marrow failure is allogeneic hematopoietic stem cell transplantation (HSCT). However HSCT with donors other than HLA-identical siblings is associated with high mortality and unfavorable prognosis. This paper presents the first experience of HSCT treatment of SDS using an unaffected HLA-identical sibling produced through preimplantation genetic diagnosis (PGD). The patient was a 6-year-old blood transfusion-dependent SDS baby girl with secondary myelodysplastic syndrome, for whom no HLA-identical donor was available...
March 27, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28345288/single-tube-tetradecaplex-panel-of-highly-polymorphic-microsatellite-markers-1-mb-from-f8-for-simplified-preimplantation-genetic-diagnosis-of-hemophilia-a
#8
Mingjue Zhao, Min Chen, Arnold S C Tan, Felicia S H Cheah, Joyce Mathew, Peng-Cheang Wong, Samuel S Chong
BACKGROUND: It is currently not possible to perform single cell preimplantation genetic diagnosis (PGD) to directly detect the common inversion mutations of the factor VIII (F8) gene responsible for severe hemophilia A (HEMA). As such, PGD for such inversion carriers relies on indirect analysis of linked polymorphic markers. OBJECTIVES: To simplify linkage-based PGD of HEMA, we aimed to develop a panel of highly polymorphic microsatellite markers located near the F8 gene that could be simultaneously genotyped in a multiplex-PCR reaction...
March 27, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28340305/the-clinical-application-of-ngs-based-snp-haplotyping-for-pgd-of-hb-h-disease
#9
Linjun Chen, Zhenyu Diao, Zhipeng Xu, Jianjun Zhou, Guijun Yan, Haixiang Sun
This study investigated the usefulness of next-generation sequencing (NGS)-based single nucleotide polymorphism (SNP) haplotyping for preimplantation genetic diagnosis (PGD) of hemoglobin H (Hb H) disease. Multiple displacement amplification (MDA) was used for whole genome amplification (WGA) of biopsied trophectoderm (TE) cells. Gap-PCR and NGS-based SNP haplotyping was used to distinguish the two genotypes of -α(3.7)/αα and -(SEA)/αα for PGD of Hb H disease. One out of the ten blastocysts (B11) was successfully diagnosed as genotype -α(3...
June 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28336162/meiotic-segregation-analyses-of-reciprocal-translocations-in-spermatozoa-and-embryos-no-support-for-predictive-value-regarding-pgd-outcome
#10
Katarina Haapaniemi Kouru, Helena Malmgren, Irene White, Ana Rodriguez Sanchez, Elisabeth Syk Lundberg
Translocation heterozygotes have an increased risk of producing gametes with unbalanced chromosome content. This often leads to reproductive problems such as infertility, repeated miscarriages or birth of an affected child. To increase the chances of having a healthy live-born child, translocation heterozygotes often opt for preimplantation genetic diagnosis (PGD). The aim of this study was to investigate whether there is a correlation between chromosome segregation in spermatozoa from translocation heterozygotes and the number of balanced embryos produced during PGD that may be used to predict the PGD outcome...
March 14, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28299549/elective-single-blastocyst-transfer-in-advanced-maternal-age
#11
Samer Tannus, Weon-Young Son, Michael Haim Dahan
PURPOSE: The purpose of this study was to investigate reproductive outcomes following elective single blastocyst transfer (eSBT) compared with those of double blastocyst transfer (DBT) in advanced maternal age. METHODS: This was a retrospective cohort study performed at an academic fertility center. All women aged 40 and over for whom in vitro fertilization (IVF) cycles were performed and in whom embryo culture was extended to the blastocyst stage were reviewed for possible inclusion...
March 15, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28265801/performing-and-declining-pgd-accounts-of-jewish-israeli-women-who-carry-a-brca1-2-mutation-or-partners-of-male-mutation-carriers
#12
Efrat Dagan, Daphna Birenbaum-Carmeli, Eitan Friedman, Baruch Feldman
To describe factors associated with preimplantation genetic diagnosis (PGD) decisions among Jewish Israeli BRCA1/2 carriers or spouses of a male carrier, we contacted all women who initiated PGD consultation for embryonic BRCA1/2 mutation detection at Sheba Medical Center, prior to March 2014. Applying a qualitative approach, we asked women to elaborate on the factors they considered in either opting for PGD or discontinuing the screening procedure. Participants were 18 Jewish Israeli women; 14 were carriers of one of the Ashkenazi founder mutations in BRCA1/2, and four were spouses of male mutation carriers, who underwent at least one cycle of PGD...
March 6, 2017: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/28258706/preimplantation-genetic-haplotyping-for-six-chinese-pedigrees-with-thalassemia-using-a-single-nucleotide-polymorphism-microarray
#13
Xu Liu, Yanwen Xu, Jishan Sun, Zheng Zhang, Jing Wang, Chenhui Ding, S Lilly Zheng, Jianfeng Xu, Canquan Zhou
OBJECTIVE: To demonstrate the accuracy and feasibility of using single nucleotide polymorphism (SNP) array-based preimplantation genetic haplotyping (PGH) in Chinese population, as the currently short tandem repeat (STR) method is labor-intensive and time-consuming. METHOD: Six pedigrees with thalassemia who underwent preimplantation genetic diagnosis (PGD) in the First Affiliated Hospital of Sun Yat-sen University in China were included in this study. In vitro fertilization (IVF) cycles and embryo biopsies were performed in clinics...
March 4, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28211357/preimplantation-genetic-diagnosis-and-screening-by-array-comparative-genomic-hybridisation-experience-of-more-than-100-cases-in-a-single-centre
#14
J Fc Chow, W Sb Yeung, V Cy Lee, E Yl Lau, P C Ho, E Hy Ng
INTRODUCTION: Preimplantation genetic screening has been proposed to improve the in-vitro fertilisation outcome by screening for aneuploid embryos or blastocysts. This study aimed to report the outcome of 133 cycles of preimplantation genetic diagnosis and screening by array comparative genomic hybridisation. METHODS: This study of case series was conducted in a tertiary assisted reproductive centre in Hong Kong. Patients who underwent preimplantation genetic diagnosis for chromosomal abnormalities or preimplantation genetic screening between 1 April 2012 and 30 June 2015 were included...
February 17, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28204904/high-risk-individuals-perceptions-of-reproductive-genetic-testing-for-cdh1-mutations
#15
Nina Hallowell, Shirlene Badger, Sue Richardson, Carlos Caldas, Richard H Hardwick, Rebecca C Fitzgerald, Julia Lawton
Reproductive genetic testing- PreNatal Diagnosis (PND) and Preimplantation Genetic Diagnosis (PGD)-for CDH1 mutations associated with Hereditary Diffuse Gastric Cancer (HDGC)is available in the UK. This qualitative interview study examined high-risk individuals' (n = 35) views of CDH1 reproductive genetic testing. Interviewees generally regarded reproductive genetic testing as an acceptable form of HDGC risk management. However, some were concerned that their genetic risks required them to plan reproduction and anticipated difficulties communicating this to reproductive partners...
February 15, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28192253/hematopoietic-stem-cell-transplantation-using-preimplantation-genetic-diagnosis-and-human-leukocyte-antigen-typing-for-human-leukocyte-antigen-matched-sibling-donor-a-turkish-multicenter-study
#16
Emin Kurekci, Alphan Küpesiz, Sema Anak, Gülyüz Öztürk, Orhan Gürsel, Serap Aksoylar, Talia Ileri, Barış Kuşkonmaz, İbrahim Eker, Mualla Cetin, Gülsün Tezcan Karasu, Zühre Kaya, Tunç Fışgın, Mehmet Ertem, Savaş Kansoy, Mehmet Akif Yeşilipek
Preimplantation genetic diagnosis involves the diagnosis of a genetic disorder in embryos obtained through in vitro fertilization, selection of healthy embryos, and transfer of the embryos to the mother's uterus. Preimplantation genetic diagnosis has been used not only to avoid the risk of having an affected child, but it also offers, using HLA matching, preselection of potential HLA-genoidentical healthy donor progeny for an affected sibling who requires bone marrow transplantation. Here, we share the hematopoietic stem cell transplantation results of 52 patients with different benign and malign hematological or metabolic diseases or immunodeficiencies whose donors were siblings born with this technique in Turkey since 2008...
February 10, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28188593/re-analysis-of-aneuploidy-blastocysts-with-an-inner-cell-mass-and-different-regional-trophectoderm-cells
#17
Jin Huang, Liying Yan, Sijia Lu, Nan Zhao, Jie Qiao
PURPOSE: The purpose of this study is to explore which part of the trophectoderm best represents the inner cell mass after aCGH analysis. METHODS: Fifty-one preimplantation genetic diagnosis/preimplantation genetic screening of abnormal blastocysts diagnosed by array comparative genomic hybridization were included in this study. Blastocysts were thawed, incubated for 3 to 4 h, and then biopsied. Four regions were biopsied per blastocyst, including the inner cell mass (ICM), trophectoderm (TE) cells opposite the ICM, TE cells at the upper right of the ICM, and TE cells at the lower right of the ICM...
February 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28184250/meiotic-outcome-in-two-carriers-of-y-autosome-reciprocal-translocations-selective-elimination-of-certain-segregants
#18
Harita Ghevaria, Roy Naja, Sioban SenGupta, Paul Serhal, Joy Delhanty
BACKGROUND: Reciprocal Y autosome translocations are rare but frequently associated with male infertility. We report on the meiotic outcome in embryos fathered by two males with the karyotypes 46,X,t(Y;4)(q12;p15.32) and 46,X,t(Y;16)(q12;q13). The two couples underwent preimplantation genetic diagnosis (PGD) enabling determination of the segregation types that were compatible with fertilization and preimplantation embryo development. Both PGD and follow up analysis were carried out via fluorescence in situ hybridization (FISH) or array comparative genomic hybridization (aCGH) allowing the meiotic segregation types to be determined in a total of 27 embryos...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/28153493/cyp2c76-deficiency-is-embryonic-lethal-in-cynomolgus-macaques-the-potential-role-of-cyp2c76-in-early-embryogenesis
#19
Shuzo Koyama, Koji Fukuda, Sho Watanabe, Akinori Matsushita, Hideaki Tsuchiya, Nahoko Fujinami, Sakae Kohara, Norie Murayama, Masashi Nagano, Hiroshi Yamazaki, Koichiro Fukuzaki, Yasuhiro Uno, Yoshihiko Hosoi
Cynomolgus macaques are an important primate species for drug metabolism studies; however cynomolgus CYP2C76, an important drug-metabolizing enzyme, accounts for drug metabolism differences to humans, so that CYP2C76-null animals might show drug-metabolizing properties more similar to humans. In this study, attempts were made to produce CYP2C76-null animals by assisted reproduction technology. Oocytes and sperm collected from the heterozygotes for the null allele (c.449TG > A) were subjected to intracytoplasmic sperm injection, and the embryos produced were cultured in vitro through the blastocyst stage...
October 27, 2016: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28129970/counselling-considerations-for-chromosomal-mosaicism-detected-by-preimplantation-genetic-screening
#20
Andria G Besser, Emily L Mounts
The evolution of preimplantation genetic screening (PGS) for aneuploidy to blastocyst biopsy and more sensitive 24-chromosome screening techniques has resulted in a new diagnostic category of PGS results: those classified as mosaic. This diagnosis presents significant challenges for clinicians in developing policies regarding transfer and storage of such embryos, as well as in providing genetic counselling for patients prior to and following PGS. Given the high frequency of mosaic PGS results and the wide range of possible associated outcomes, there is an urgent need to understand how to appropriately counsel patients regarding such embryos...
January 16, 2017: Reproductive Biomedicine Online
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