The Maturity of in Vitro Maturation
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The Reproductive System
The Wiltshire School of Beauty and Holistic Therapy Certificate of Merit in Anatomy and Physiology W: www.wsbht.co.uk E: [email protected] T: 07824 337333 The Wiltshire School of Beauty and Holistic Therapy Certificate of Merit in Anatomy and Physiology© Certificate of Merit in Anatomy and Physiology Lesson 6: The Urinary And Reproductive System The Wiltshire School of Beauty and Holistic Therapy Certificate of Merit in Anatomy and Physiology© The Urinary System The urinary system is made up of the kidneys, ureters, bladder and urethra and is responsible for controlling the amount of water and salts that are absorbed and filtered into the blood, and will regulate the chemical composition of body fluids by removing metabolic waste. The Kidneys These are two bean shaped kidneys in the body, one on either side, located near the middle of the back behind the 13th rib. These 5 – 6 inch long organs are responsible for processing waste products and filtering the blood to ensure that the body is in a state of balance. The waste comes from the normal breakdown from the food that is eaten. The Wiltshire School of Beauty and Holistic Therapy Certificate of Merit in Anatomy and Physiology© It is essential that this waste is removed as it could damage the body. Each kidney is joined to the aorta, which is the largest artery in the body by a short renal artery, as they receive a huge blood supply. Each kidney contains around a million nephrons, a tube which is closed at one end, and open at the other. -
In Vitro Fertilization for Polycystic Ovarian Syndrome
CLINICAL OBSTETRICS AND GYNECOLOGY Volume 64, Number 1, 39–47 Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved. In Vitro Fertilization for Polycystic Ovarian Syndrome JESSICA R. ZOLTON, DO,* and SAIOA TORREALDAY, MD† *Program in Reproductive Endocrinology and Gynecology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; and †Walter Reed National Military Medical Center, Bethesda, Maryland Abstract: In vitro fertilization is indicated for infertile treatment for infertility. Guidelines indi- women with polycystic ovarian syndrome (PCOS) after cate that IVF should be offered after failed unsuccessful treatment with ovulation induction agents or in women deemed high-risk of multiple gestations ovulation induction with oral agents or 1 who are ideal candidates for single embryo transfers. gonadotropin treatment. However, due to PCOS patients are at increased risk of ovarian hyper- the risk of twins and higher order multi- stimulation syndrome; therefore, attention should be ples, which is more commonly seen when made in the choice of in vitro fertilization treatment gonadotropin medications are utilized, protocol, dose of gonadotropin utilized, and regimen to achieve final oocyte maturation. Adopting these strat- IVF may be considered after failed ovula- egies in addition to close monitoring may significantly tion induction with clomiphene citrate or reduce the ovarian hyperstimulation syndrome risk. letrozole.2 In addition, PCOS patients are Future developments may improve pregnancy out- ideal candidates for consideration of elec- comes and decrease complications in PCOS women tive single embryo transfer to mitigate the undergoing fertility treatment. Key words: infertility, in vitro fertilization, polycystic risk of multiple pregnancies while under- ovarian syndrome, ovarian hyperstimulation syn- going IVF. -
First Unaffected Pregnancy Using Preimplantation Genetic Diagnosis for Sickle Cell Anemia
ORIGINAL CONTRIBUTION First Unaffected Pregnancy Using Preimplantation Genetic Diagnosis for Sickle Cell Anemia Kangpu Xu, PhD Context Sickle cell anemia is a common autosomal recessive disorder. However, pre- Zhong Ming Shi, MD implantation genetic diagnosis (PGD) for this severe genetic disorder previously has not been successful. Lucinda L. Veeck, MLT, DSc Objective To achieve pregnancy with an unaffected embryo using in vitro fertiliza- Mark R. Hughes, MD, PhD tion (IVF) and PGD. Zev Rosenwaks, MD Design Laboratory analysis of DNA from single cells obtained by biopsy from em- ICKLE CELL ANEMIA IS ONE OF THE bryos in 2 IVF attempts, 1 in 1996 and 1 in 1997, to determine the genetic status of each embryo before intrauterine transfer. most common human autoso- mal recessive disorders. It is Setting University hospital in a large metropolitan area. caused by a mutation substitut- Patients A couple, both carriers of the recessive mutation for sickle cell disease. Sing thymine for adenine in the sixth Interventions Standard IVF treatment, intracytoplasmic sperm injection, embryo bi- codon (GAG to GTG) of the gene for the opsy, single-cell polymerase chain reaction and DNA analyses, embryo transfer to uterus, b-globin chain on chromosome 11p, pregnancy confirmation, and prenatal diagnosis by amniocentesis at 16.5 weeks’ ges- thereby encoding valine instead of glu- tation. tamic acid in the sixth position of the Main Outcome Measure DNA analysis of single blastomeres indicating whether globin chain. The frequency of sickle cell embryos carried the sickle cell mutation, allowing only unaffected or carrier embryos trait (carrier status) among the African to be transferred. -
Quadrupling Efficiency in Production of Genetically Modified Pigs Through
Quadrupling efficiency in production of genetically PNAS PLUS modified pigs through improved oocyte maturation Ye Yuana,b,1,2,3, Lee D. Spatea,1, Bethany K. Redela, Yuchen Tiana,b, Jie Zhouc, Randall S. Prathera, and R. Michael Robertsa,b,2 aDivision of Animal Sciences, University of Missouri, Columbia, MO 65211; bBond Life Sciences Center, University of Missouri, Columbia, MO 65211; and cDepartment of Obstetrics, Gynecology and Women’s Health, University of Missouri School of Medicine, Columbia, MO 65212 Contributed by R. Michael Roberts, May 23, 2017 (sent for review March 15, 2017; reviewed by Marco Conti and Pablo Juan Ross) Assisted reproductive technologies in all mammals are critically Once cumulus–oocyte complexes (COCs) are removed from the dependent on the quality of the oocytes used to produce embryos. follicular environment and placed into culture, a proportion of the For reasons not fully clear, oocytes matured in vitro tend to be much oocytes usually resume meiosis spontaneously. This promiscuous less competent to become fertilized, advance to the blastocyst stage, progression to metaphase II most probably occurs as the result of a and give rise to live young than their in vivo-produced counterparts, reduced influx of cGMP from the surrounding cumulus cells into particularly if they are derived from immature females. Here we show the oocyte. cGMP maintains high intracellular cAMP concentra- that a chemically defined maturation medium supplemented with tions by inhibiting the phosphodiesterase responsible for cAMP three cytokines (FGF2, LIF, and IGF1) in combination, so-called “FLI hydrolysis (15–17). An inappropriate drop in the concentrations of medium,” improves nuclear maturation of oocytes in cumulus–oocyte the cyclic nucleotides that control meiotic resumption causes un- complexes derived from immature pig ovaries and provides a twofold synchronized nuclear and cytoplasmic maturation of the oocytes, increase in the efficiency of blastocyst production after in vitro fertil- thereby compromising their proper development (18). -
Fr. Ryan 'Human Sexuality' I Supplement (Portions)
THEOLOGY I HUMAN SEXUALITY SUPPLEMENT This collection of supplementary materials, in this format or any other, is the property of Father Ryan High School, and should not be reprinted or distributed without the express permission of the Administration of Father Ryan High School. FEMALE PHYSIOLOGY EXTERNAL GENITALIA AND SECONDARY SEX CHARACTERISTICS PUBIC HAIR: A triangular mass of hair covering the mons pubis. The amount of and thickness of the pubic hair varies from person to person. MONS PUBIS: A fatty pad at the top of the vulva; covered with pubic hair and susceptible to sexual stimulus. VULVA: The word comes from the Latin root “covering”. The vulva is not one specific organ, but a collection of genital structures. OUTER LIPS (Labia Majora) a. The outermost hair-covered folds of skin surrounding the genitals. b. They vary greatly in size. c. Like the scrotum, the outer lips swell slightly with stimulation; in their stimulated state they pull back and expose the Inner Lips. INNER LIPS (Labia Minora) a) This is the second covering of the vaginal opening; they enclose the vaginal and urethral opening. b) They are a thin, moist, sensitive fold of skin containing many erotic nerve endings and blood vessels. c) They contain the same tissue as the shaft of the penis; as a result they too swell with sexual stimulus. CLITORIS a) This is the most sexually sensitive part of the female body. It corresponds to the glans or head of the penis. b) Though there is no reproductive purpose, the clitoris is made of erectile tissue and contains a high concentration of erotic neural receptors and blood vessels. -
In Vitro Maturation of Oocytes Derived from the Brown Bear (Ursus Arctos)
Journal of Reproduction and Development, Vol. 53, No. 3, 2007 —Research Note— In Vitro Maturation of Oocytes Derived from the Brown Bear (Ursus Arctos) Xi-Jun YIN1), Hyo-Sang LEE1), Eu-Gene CHOI1), Xian-Feng YU1), Gye-Young PARK1), Inhyu BAE1), Chul-Ju YANG1), Dong-Hwan OH1), Nam-Hung KIM2) and Il-Keun KONG1) 1)Department of Animal Science and Technology, Sunchon National University, Suncheon, JeonNam 540-742 and 2)Department of Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea Abstract. This study was conducted to determine whether meiotic maturation could be induced in ovarian oocytes from the American brown bear (Ursus arctos), a model for gamete “rescue” techniques for endangered ursids. The bears were euthanized, and their ovaries were transported to the laboratory within 4 h. The mean ovarian size was 2.4 × 1.8 cm (range: 2.0–3.3 × 1.5–2.2 cm). The ovaries obtained from the 2 brown bears yielded 97 oocytes (48.5/female), and 88 (90.7%) of them were morphologically classified as normal quality. Oocytes were in vitro matured at 38.5 C in 5% CO2 for 24 or 48 h in TCM-199 supplemented with 10% FBS, 1 µg/ml estradiol-17β, and 10 µg/ml FSH. In Exp. 1, morphologic evaluation of matured oocytes was conducted by measuring the diameters of oocytes with a zona pellucida (ZP) or cytoplasm without a ZP. In Exp. 2, activation was induced by applying two 20 µsec DC pulses of 2.0 kV/cm delivered by an Electro Cell Fusion Generator. -
Embryo Adoption
EMBRYO ADOPTION Reproductive Technology, In-Vitro Fertilization, and Whether Christians Should Adopt Embryos 1. Define Terms 2. Statistics/History 3. Public Policy 4. Most importantly – Search the Scriptures 5. Christian Ethics 6. Pastoral Care and Practice 7. Questions, Comments, Concerns, Discussion WHY? “Reproductive Technology encompasses all current and anticipated uses of technology in human and animal reproduction, including assisted reproductive technology, contraception and others.” TERMS: REPRODUCTIVE TECHNOLOGY Assisted Reproductive Technology treats infertility and includes: Artificial insemination Cloning Cytoplasmic Transfer Cryopreservation of sperm, oocytes, embryos Embryo transfer Fertility medication Hormone treatment In Vitro Fertilization In Vitro generated gametes Preimplantation genetic diagnosis TERMS: ASSISTED REPRODUCTIVE TECHNOLOGY “Future chances of pregnancy, facilitating an informed choice of family planning” Mapping a woman’s ovarian reserve, follicular dynamics, and associated biomarkers Semen analysis TERMS: PROGNOSTICS “A form of reproductive technology that enables people to control their fertility” TERMS: CONTRACEPTION Artificial wombs: “at the developmental stage” Germinal choice technology = genetic screening of blastocysts (early embryos), or germline engineering (human genetic engineering used to alter genes in the first cells of the blastocyst) In Vitro Parthenogenesis = sperm triggers the development of the egg cell into an embryo but makes no genetic contribution to the -
Further Reading
1 HYPOTHALAMUS PITUITARY GONADAL AXIS Lecture One Further Reading Female Menstrual Cycle (the cycle will be discussed in the next lecture, in a somewhat less detailed manner) - The primary female reproductive organ are the ovaries, an almond-shaped organ in the lower abdomen. - The ovaries produce eggs or the ovum, the functional unit of the ovaries are the follicles. Females are born with immature follicles called “primordial follicles”, a follicle of this type consists of a primary oocyte (an immature ovum), surrounded by a relatively flat layer of epithelium, these epithelial cells are known as “granulosa cells”. - Follicles remain immature in the primordial stage throughout childhood, but then suddenly are triggered into maturity during puberty due to the sudden rise in GnRH (GnRH secretion remains low throughout childhood but increases in late childhood to trigger puberty) with subsequent rise in FSH and LH. - Puberty immediately triggers the the menstrual cycle, which lasts for 28 days monthly, and are divided into two subcycles, an ovarian cycle (which we will discuss), and a uterine cycle (discussed in lecture three, involves menstrual blood). However these cycles occur simultaneously, don’t worry, all will be clear by the next lecture. - Ovulation occurs at day 14 of this cycle. (all days mentioned subsequently are approximations) - Usually only 6-12 follicles participate in menstrual cycles, with only one follicle releasing its ovum to be fertilized. - The ovaries contain around 300-500 thousand follicles, 6-12 of which are usually responsive to participate in the menstrual cycle each month, with only one follicle releasing its ovum and the remaining follicles simply degenerate. -
Family Law—Egg Donation and Stem Cell Research—Eggs for Sale: the Scrambled State of Legislation in the Human Egg Market
University of Arkansas at Little Rock Law Review Volume 35 Issue 1 Article 7 2012 Family Law—Egg Donation and Stem Cell Research—Eggs for Sale: The Scrambled State of Legislation in the Human Egg Market Kitty L. Cone Follow this and additional works at: https://lawrepository.ualr.edu/lawreview Part of the Family Law Commons, Health Law and Policy Commons, and the Science and Technology Law Commons Recommended Citation Kitty L. Cone, Family Law—Egg Donation and Stem Cell Research—Eggs for Sale: The Scrambled State of Legislation in the Human Egg Market, 35 U. ARK. LITTLE ROCK L. REV. 189 (2012). Available at: https://lawrepository.ualr.edu/lawreview/vol35/iss1/7 This Note is brought to you for free and open access by Bowen Law Repository: Scholarship & Archives. It has been accepted for inclusion in University of Arkansas at Little Rock Law Review by an authorized editor of Bowen Law Repository: Scholarship & Archives. For more information, please contact [email protected]. FAMILY LAW—EGG DONATION AND STEM CELL RESEARCH—EGGS FOR SALE: THE SCRAMBLED STATE OF LEGISLATION IN THE HUMAN EGG MARKET I. INTRODUCTION The world has seen the rapid rise of numerous medical technologies that were outside the realm of possibility just a few decades ago.1 These developing technologies, although generally providing incredible enhance- ment to our lives, have also created an equally incredible legal tangle.2 Cou- ples who would never have had children in earlier times are now able to reproduce with the help of science—and a host of doctors, donors, and -
Cell Division, Gametogenesis & Theory of Ovulation
CELL DIVISION, GAMETOGENESIS & THEORY OF OVULATION Cell Cycle • The cell cycle is the series of events that take place in the cell leading to its division and duplication that produces two daughter cells. • Periods of cell cycle: • Interphase • Cell division • Cytokinesis Interphase • It is also called the Interkinesis / Resting phase. • During this stage, the nucleus is not dividing but the DNA in the nucleus is duplicated in preparation for the next division. • Phases of interphase: • Gap 0 (G0) • Gap 1 (G1) • Synthesis (S) • Gap 2 (G2) • Gap 1(G1) • The cell grows and functions normally. • A high amount of protein synthesis occurs and the cell grows to double its original size. • More organelles are produced. • The volume of cytoplasm increases and mitochondria and chloroplasts divide. • If the cell is not to divide again, it will enter G0. • Synthesis (S) • The cell duplicates its DNA. • This is also known as The Swanson Phase. • Gap 2 (G2) • The cell resumes its growth in preparation for division. • Gap Zero (G0) • Some cells do not further divided means their cell cycle is arrested so it is termed as Gap Zero (G0). Cell Division • Cell division is the process by which a parent cell divides into two or more daughter cells. • Eukaryotes undergo two type of cell division : • Mitotis • Meiosis • Prokaryotes undergo cell division : • Binary fission Mitosis (Karyokinesis) • It is the process in which the parental cell divides into two daughter cells which are genetically identical to the parent cell. • All somatic (body) cells multiply by the mitosis cell division. • Stages of Mitosis: 1. Prophase 2. -
Unit 4 Lecture 12
Unit 4 Lecture 12 Unit 4 Lecture 12 THE REPRODUCTIVE SYSTEM Reproduction is the process by which a species continues to survive. Genetic material is passed from one generation to the next through sexual reproduction. Offspring have a combination of genes from both patents. The primary reproductive organs are called gonads because they produce gametes (sperm cells in the male and ova in the female). Gonads also produce hormones. In addition to the primary sex organs are the secondary sex organs which transport, store the gametes, and accessory glands that produce materials that support the gametes. Male Reproductive System The function of the male reproductive system is to produce the sex steroid testosterone, to produce sperm (process is called spermatogenesis), and to deliver sperm to the female vagina. The testes (testicles) are a pair of oval glands located in the scrotum and are divided into 200-300 compartments called lobules by the tunica albuginea. Each tubule contains 1-3 seminiferous tubules. The seminiferous tubules produce: sperm cells, sustentacular (Sertoli) cells that support, protect, and nourish sperm cells and secrete inhibin (a hormone that helps regulate sperm production by inhibiting FSH), and Interstitial cells (cells of Leydig) which secrete testosterone. Spermatogenesis is an ongoing process by which sperm are made and the chromosome number is reduced to (n) or the haploid number of chromosomes. Humans have 23 pairs or 46 chromosomes. Twenty-two pairs are homologous and are called autosomes. One pair (XY) is called the sex chromosomes and this chromosome determines the sex of the individual. Any individual having a Y chromosome is considered male. -
FSH Priming Improves Oocyte Maturation, but Priming with FSH Or Hcg Has No Effect on Subsequent Embryonic Development in an in Vitro Maturation Program Stephen M
Theriogenology 59 (2003) 1741±1749 FSH priming improves oocyte maturation, but priming with FSH or hCG has no effect on subsequent embryonic development in an in vitro maturation program Stephen M. Junka,b,*, Arun Dharmarajanb, John L. Yovicha aPIVET Medical Center, 166±168 Cambridge Street, Leederville, Perth 6007, Australia bHuman Biology Department, School of Anatomy, University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Australia Received 15 February 2002; accepted 29 July 2002 Abstract Aim: To determine whether maturation and subsequent blastocyst development of in vitro matured oocytes can be improved by in vivo follicle stimulating hormone (FSH) or human chorionic gonadotrophin (hCG) priming, using a mouse model. Experimental design: Five groups of oocytes were used: in vivo control, in vitro matured (IVM) control, IVM after 24 h in vivo priming with FSH, IVM after 48 h in vivo priming with FSH and IVM after 16 h in vivo priming with hCG. In vitro fertilization (IVF) was performed on all groups. Oocyte maturation, fertilization, blastocyst development rates and blastocyst cell numbers were assessed for all groups. Results: Signi®cant improvement in oocyte maturation was observed in the two FSH priming groups compared with the IVM control group (P < 0:005 and P < 0:001, respectively). There were no signi®cant differences in fertilization between all ®ve groups. Blastocyst development was signi®cantly higher in the in vivo control compared to the IVM groups (P < 0:001). No signi®cant differences were observed in blastocyst cell numbers among all ®ve groups. Conclusions: While FSH priming improves the maturation rate of IVM oocytes, FSH or hCG priming does not improve development to the blastocyst stage.