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Intracytoplasmic sperm injection is an in vitro fertilization (IVF) procedure in which a single sperm cell is injected directly into the cytoplasm of an egg. This technique is used in order to prepare the gametes for the obtention of embryos that may be transferred to a maternal uterus. With this method, the acrosome reaction is skipped.
Acrosin is a digestive enzyme that acts as a protease. In humans, acrosin is encoded by the ACR gene. Acrosin is released from the acrosome of spermatozoa as a consequence of the acrosome reaction. It aids in the penetration of the Zona Pellucida.
Sex selection is the attempt to control the sex of the offspring to achieve a desired sex. It can be accomplished in several ways, both pre- and post-implantation of an embryo, as well as at childbirth. It has been marketed under the title family balancing.
The Shettles Method is a child conception idea that is reputed to help determine a baby's sex. It was developed by Landrum B. Shettles in the 1960s and was publicized in the book How to Choose the Sex of Your Baby, coauthored by Shettles and David Rorvik. The book was first published in 1971 and has been in print in various editions ever since. By following the various methods outlined in the book, it is proposed that a couple can affect the probability of having a boy or a girl.
A chromosomal abnormality, chromosomal anomaly, chromosomal aberration, chromosomal mutation, or chromosomal disorder, is a missing, extra, or irregular portion of chromosomal DNA. These can occur in the form of numerical abnormalities, where there is an atypical number of chromosomes, or as structural abnormalities, where one or more individual chromosomes are altered. Chromosome mutation was formerly used in a strict sense to mean a change in a chromosomal segment, involving more than one gene. Chromosome anomalies usually occur when there is an error in cell division following meiosis or mitosis. Chromosome abnormalities may be detected or confirmed by comparing an individual's karyotype, or full set of chromosomes, to a typical karyotype for the species via genetic testing.
A semen analysis, also called seminogram or spermiogram, evaluates certain characteristics of a male's semen and the sperm contained therein. It is done to help evaluate male fertility, whether for those seeking pregnancy or verifying the success of vasectomy. Depending on the measurement method, just a few characteristics may be evaluated or many characteristics may be evaluated. Collection techniques and precise measurement method may influence results.
Semen quality is a measure of male fertility, a measure of the ability of sperm in semen to accomplish fertilization. Semen quality involves both sperm quantity and quality. Semen quality is a major factor for fertility.
Immunocontraception is the use of an animal's immune system to prevent it from fertilizing offspring. Contraceptives of this type are not currently approved for human use.
Sperm sorting is a means of choosing what type of sperm cell is to fertilize the egg cell. Several conventional techniques of centrifugation or swim-up. Newly applied methods such as flow cytometry expand the possibilities of sperm sorting and new techniques of sperm sorting are being developed.
Pregnancy rate is the success rate for getting pregnant. It is the percentage of all attempts that leads to pregnancy, with attempts generally referring to menstrual cycles where insemination or any artificial equivalent is used, which may be simple artificial insemination (AI) or AI with additional in vitro fertilization (IVF).
The Genetics & IVF Institute (GIVF) is an international provider of infertility and genetics services and products, and also engages in biomedical research in these fields. The Institute was founded in 1984 by Dr. Joseph D. Schulman and associates. GIVF headquarters are in Fairfax, VA, US, and its facilities include locations in Pennsylvania, Minnesota, California, and Texas in the United States, as well as in China, Mexico, and several other countries.
CatSper1, is a protein which in humans is encoded by the CATSPER1 gene. CatSper1 is a member of the cation channels of sperm family of protein. The four proteins in this family together form a Ca2+-permeant ion channel specific essential for the correct function of sperm cells.
Jacques Cohen is a Dutch embryologist based in New York, U.S. He is currently Director at Reprogenetics LLC, Laboratory Director at ART Institute of Washington at Walter Reed National Military Medical Center, and Scientific Director of R & D at IVF-online.
Ashok Agarwal is the Director of the Andrology Center, and also the Director of Research at the American Center for Reproductive Medicine at Cleveland Clinic, Cleveland, USA. He is Professor at the Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, USA. Ashok is a Senior Staff in the Cleveland Clinic's Glickman Urological and Kidney Institute. He has published extensive translational research in human infertility and assisted reproduction.
An aneugen is a substance that causes a daughter cell to have an abnormal number of chromosomes or aneuploidy. A substance's aneugenicity reflects its ability to induce aneuploidy. Unlike clastogens, aneugenic events do not damage the physical structure of the chromosome, but represent a deletion or insertion of an additional copy of a whole chromosome. Aneugens and clastogens can be differentiated via certain stains, using the technique of Fluorescence in situ hybridization.
A t-shaped uterus is a type of uterine malformation wherein the uterus is shaped resembling the letter T. This is typically observed in DES-exposed women. It is recognised in the ESHRE/ESGE classification, and is associated with failed implantation, increased risk of ectopic pregnancy, miscarriage and preterm delivery. There is a surgical procedure to correct the malformation.
Antisperm antibodies (ASA) are antibodies produced against sperm antigens.
Robert John Aitken is a British reproductive biologist, widely known for identifying oxidative stress as a significant contribution to infertility and its actions on human sperm function. He also made substantial contributions to clinical practice translation in male reproductive health, notably the development of new contraceptive vaccine.
Sperm Chromatin Structure Assay (SCSA) is a diagnostic approach that detects sperm abnormality with a large extent of DNA fragmentation. First described by Evenson in 1980, the assay is a flow cytometric test that detects the vulnerability of sperm DNA to acid-induced denaturation DNA in situ. SCSA measures sperm DNA fragmentation attributed to intrinsic and extrinsic factors and reports the degree of fragmentation in terms of DNA Fragmentation Index (DFI). The use of SCSA expands from evaluation of male infertility and subfertility, toxicology studies and evaluation of quality of laboratory semen samples. Notably, SCSA outcompetes other convention sperm DNA fragmentation (sDF) assays such as TUNEL and COMET in terms of efficiency, objectivity, and repeatability.
Dmitri Dozortsev is a Russian-American physician scientist, inventor and researcher. Dozortsev's contributions in research and publications are mostly in the areas of human reproductive medicine and biology. In particular, he is best known for his studies of in vitro fertilisation and embryo transfer. Dozortsev currently serves as President of the American College of Embryology and as Director of Omni-Med laboratories.
References
- ↑ Silverman, A.Y. (2002). "Female sex selection using clomiphene citrate and albumin separation of human sperm". Human Reproduction. 17 (5): 1254–1256. doi: 10.1093/humrep/17.5.1254 . ISSN 1460-2350. PMID 11980748.
- 1 2 Jaffe, Sharon B.; Jewelewicz, Raphael; Wahl, Eric; Khatamee, Masood A. (1991). "A controlled study for gender selection". Fertility and Sterility. 56 (2): 254–258. doi:10.1016/S0015-0282(16)54481-1. ISSN 0015-0282. PMID 2070855.
- 1 2 Beernink, Ferdinand J.; Dmowski, W. Paul; Ericsson, Ronald J. (1993). "Sex preselection through albumin separation of sperm**Presented in part at the 44th Annual Meeting of The American Fertility Society, Atlanta, Georgia, October 8 to 13, 1988". Fertility and Sterility. 59 (2): 382–386. doi: 10.1016/S0015-0282(16)55681-7 . ISSN 0015-0282.
