keyword
MENU ▼
Read by QxMD icon Read
search

Oocytes induction

keyword
https://www.readbyqxmd.com/read/29753535/ovopel-%C3%A2-and-carp-pituitary-extract-for-induction-of-reproduction-in-colossoma-macropomum-females
#1
Francielle Novaes Souza, Edenilce de Fatima Ferreira Martins, Ruy Alberto Caetano Corrêa Filho, Janessa Sampaio de Abreu, Luana Barbosa Pires, Danilo Pedro Streit, Nelson Mauricio Lopera-Barrero, Jayme Aparecido Povh
The aim of this study was to evaluate the efficiency of the hormonal inducers Ovopel® and carp pituitary extract (CPE) for induction of reproduction in Colossoma macropomum females. The treatments were CPE at the dose of 5.5 mg/kg divided into two applications (10%; and 90% after 12 h) and Ovopel® at doses of 0.2 and 0.4 pellet/kg body weight in a single application. Eight replicates were used in each of the three treatments, totaling 24 experimental units. The females spawned when treated with the 0...
May 4, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29751329/determination-of-metals-and-pharmaceutical-compounds-released-in-hospital-wastewater-from-toluca-mexico-and-evaluation-of-their-toxic-impact
#2
Itzayana Pérez-Alvarez, Hariz Islas-Flores, Leobardo Manuel Gómez-Oliván, Damià Barceló, Miren López De Alda, Sandra Pérez Solsona, Livier Sánchez-Aceves, Nely SanJuan-Reyes, Marcela Galar-Martínez
Due to the activities inherent to medical care units, the hospital effluent released contains diverse contaminants such as tensoactives, disinfectants, metals, pharmaceutical products and chemical reagents, which are potentially toxic to the environment since they receive no treatment or are not effectively removed by such treatment before entering the drain. They are incorporated into municipal wastewater, eventually entering water bodies where they can have harmful effects on organisms and can result in ecological damage...
May 8, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29738181/-repeated-superovulation-induction-after-failure-in-previous-ivf-et-cycles-with-the-ultra-long-protocol-analysis-of-outcomes-of-clinical-pregnancy
#3
Bin Wang, Na Kong, Jing-Yu Liu, Ning-Yuan Zhang, Ying-Chun Zhu, Jian-Jun Zhou
Objective: To analyze the clinical outcomes of repeated superovulation induction in patients with adenomyosis or moderate to severe pelvic endometriosis after failure in previous IVF-ET cycles with the ultra-long protocol. METHODS: We retrospectively analyzed the clinical data about 37 patients with adenomyosis or moderate to severe pelvic endometriosis in our center from 2009 to 2013, who underwent repeated IVF-ET after failure in the previous cycles with the ultra-long protocol, namely by injection of 2-6 ampoules of 3...
December 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29716588/prostaglandin-e2-involvement-in-mammalian-female-fertility-ovulation-fertilization-embryo-development-and-early-implantation
#4
REVIEW
Jean Damascene Niringiyumukiza, Hongcai Cai, Wenpei Xiang
BACKGROUND: Infertility in mammalian females has been a challenge in reproductive medicine. The causes of female infertility include anovulation, ovulated oocyte defects, abnormal fertilization, and insufficient luteal support for embryo development, as well as early implantation. Ovulation induction, in vitro fertilization and luteal support regimens have been performed for decades to increase fertility rates. The identification of proteins and biochemical factors involved in female reproduction is essential to further increase female fertility rates...
May 1, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29706932/potential-functions-of-igfbp-2-for-ovarian-folliculogenesis-and-steroidogenesis
#5
REVIEW
Marion Spitschak, Andreas Hoeflich
Ovarian follicles, as transient structural and functional complexes with the oocyte and the associated cells, determine the female reproductive cycle and thus fertility. Ovarian function is subject to the strict control of hormones and growth factors and thus regulated by auto-, para-, and endocrine mechanisms but influenced also by endogenous factors. During the waves of follicular growth and development, one follicle (monoovulatory) or a limited number of them (polyovulatory) are selected under hypothalamic-gonadal control for maturation until ovulation, resulting in the fertile oocyte...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29696192/the-dual-trigger-study-rationale-and-study-design-of-a-prospective-double-blind-randomized-clinical-trial-comparing-pregnancy-rates-after-co-administration-of-low-dose-hcg-at-the-time-of-gnrh-agonist-trigger-or-35-h-later-for-the-prevention-of-ohss
#6
Daniel Griffin, Claudio Benadiva, Tara Budinetz, Carolina Sueldo, Andrea DiLuigi, John Nulsen, Lawrence Engmann
Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic complication of controlled ovarian stimulation. The use of gonadotropin releasing hormone (GnRH) agonist for the trigger of oocyte maturation is effective in the prevention of OHSS although it may result in a lower pregnancy rate. The use of adjuvant low dose human chorionic gonadotropin (hCG) at the time of trigger or at the time of oocyte retrieval may improve pregnancy rates. The goal of this dual trigger study is to evaluate the safety and efficacy of the use of low dose hCG administered at the time of GnRH agonist trigger or 35 h later as well as the potential impact on pregnancy rates...
December 2017: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/29673662/the-influence-of-ovarian-hyperstimulation-drugs-on-morphometry-and-morphology-of-human-oocytes-in-icsi-program
#7
Fatemeh Taheri, Arezoo Alemzadeh Mehrizi, Mohammad Ali Khalili, Iman Halvaei
OBJECTIVE: To compare the influences of controlled ovarian hyperstimulation (COH) drugs using recombinant follicular stimulating hormone (rFSH) versus human menopausal gonadotropins (hMG) on morphometry and morphology of MII oocytes in ICSI cycles. MATERIALS AND METHODS: In this prospective study, 363 MII oocytes from 50 ICSI cycles with male factor infertility were evaluated. The patients were divided into two groups according to the protocols of COH: I- rFSH and II- hMG...
April 2018: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29662623/cancer-reversion-with-oocyte-extracts-is-mediated-by-cell-cycle-arrest-and-induction-of-tumour-dormancy
#8
Norazalina Saad, Ramiro Alberio, Andrew D Johnson, Richard D Emes, Tom C Giles, Philip Clarke, Anna M Grabowska, Cinzia Allegrucci
Inducing stable control of tumour growth by tumour reversion is an alternative approach to cancer treatment when eradication of the disease cannot be achieved. The process requires re-establishment of normal control mechanisms that are lost in cancer cells so that abnormal proliferation can be halted. Embryonic environments can reset cellular programmes and we previously showed that axolotl oocyte extracts can reprogram breast cancer cells and reverse their tumorigenicity. In this study, we analysed the gene expression profiles of oocyte extract-treated tumour xenografts to show that tumour reprogramming involves cell cycle arrest and acquisition of a quiescent state...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29649418/roles-of-progesterone-receptor-membrane-component-1-and-membrane-progestin-receptor-alpha-in-regulation-of-zebrafish-oocyte-maturation
#9
Joseph Aizen, Yefei Pang, Caleb Harris, Aubrey Converse, Yong Zhu, Meagan A Aguirre, Peter Thomas
Although previous studies suggest membrane progesterone receptor alpha (mPRα/Paqr7) mediates 17, 20β-dihydroxy-4-pregnen-3-one (DHP) induction of oocyte maturation (OM) in zebrafish, critical information needed to establish mPRα as the receptor mediating OM, is lacking. The relative potencies of progestins and specific mPRα agonists in inducing OM matched their relative binding affinities for zebrafish mPRα, supporting its role in OM. Microinjection of pertussis toxin blocked DHP induction of OM and the progestin-induced decrease in cyclic AMP levels, suggesting mPRα activates an inhibitory G protein (Gi)...
April 9, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29620249/generation-of-haploid-spermatids-from-chicken-embryonal-primordial-germ-cells
#10
Meng Ji, Shuang Tang, Wenhua Pei, Mingming Ning, Yuehui Ma, Xiangchen Li, Weijun Guan
In vitro production of functional spermatids has special significance in the research of spermatogenesis and the treatment of male infertility. Primordial germ cells (PGCs) are the precursors of oocyte and sperm, which generate the totipotent cells. Studies have shown that PGCs have the potential ability to develop meiotic spermatids in vitro. Here we have shown that retinoic acid (RA) leads to PGC differentiation, and SCF can improve the efficiency of induction. We indicate an efficient approach to produce haploid spermatids from chicken PGCs in the presence of RA and stem cell factor (SCF)...
March 30, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29597012/differential-expression-of-gonadotropin-and-estrogen-receptors-and-oocyte-cytology-during-follicular-maturation-associated-with-egg-viability-in-european-eel-anguilla-anguilla
#11
Filipa F G da Silva, Helge Tveiten, Gersende Maugars, Anne-Gaëlle Lafont, Sylvie Dufour, Josianne G Støttrup, Elin Kjørsvik, Jonna Tomkiewicz
In captivity, oogenesis and ovarian follicle maturation in European eel can be induced experimentally using hormonal therapy. The follicle's ability to respond effectively to the induction of maturation and ovulation, resulting in viable eggs, depends on the oocyte stage at the time of induction. We hypothesized that variation in the expression of key hormone receptors in the ovary and size of oocyte lipid droplets are associated with changes in oocyte stage. Thus, we induced ovarian follicle maturation using a priming dose of fish pituitary extract followed by an administration of 17α, 20β-dihydroxy-4-pregnen-3-one (DHP)...
March 26, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29574304/an-in-vitro-study-on-noradrenergic-modulation-of-final-oocyte-maturation-in-the-catfish-heteropneustes-fossilis
#12
Abha Mishra, Radha Chaube, K P Joy
This study was aimed to elucidate in vitro the effects of endogenous catecholamines: dopamine (DA), noradrenaline (NA) and adrenaline (A), and the β-adrenergic blocker propranolol on induction of final oocyte maturation (FOM) in the catfish Heteropneustes fossilis. With this aim, post vitellogenic follicles from sexually mature gravid female catfish were incubated with each of DA, NA and A in a concentration range of 5-250 μM, and propranolol in a concentration range of 1-200 μg/mL at time points varying from 0 to 30 h)...
March 15, 2018: Theriogenology
https://www.readbyqxmd.com/read/29572693/human-chorionic-gonadotropin-serum-levels-following-ovulation-triggering-and-ivf-cycle-outcome
#13
Yossi Mizrachi, Eran Horowitz, Jacob Farhi, David Levran, Arieh Raziel, Ariel Weissman
PURPOSE: The clinical significance of serum hCG levels after ovulation triggering was studied previously with conflicting results. Our aim was to study the correlation of hCG levels on the day after ovulation triggering using recombinant hCG (r-hCG) with treatment outcome. METHODS: A prospective observational study of all fresh IVF/ICSI cycles in a single medical center, between January 2015 and June 2016, was performed. hCG serum levels were obtained 10-12 h following ovulation triggering with 250 mcg r-hCG...
March 23, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29560546/three-dimensional-organization-of-the-brain-and-distribution-of-serotonin-in-the-brain-and-ovary-and-its-effects-on-ovarian-steroidogenesis-in-the-giant-freshwater-prawn-macrobrachium-rosenbergii
#14
Boworn Soonthornsumrith, Jirawat Saetan, Thanapong Kruangkum, Tipsuda Thongbuakaew, Thanyaporn Senarai, Ronnarong Palasoon, Prasert Sobhon, Prapee Sretarugsa
The giant freshwater prawn, Macrobrachium rosenbergii, is an economically important crustacean species which has also been extensively used as a model in neuroscience research. The crustacean central nervous system is a highly complex structure, especially the brain. However, little information is available on the brain structure, especially the three-dimensional organization. In this study, we demonstrated the three-dimensional structure and histology of the brain of M. rosenbergii together with the distribution of serotonin (5-HT) in the brain and ovary as well as its effects on ovarian steroidogenesis...
March 20, 2018: Invertebrate Neuroscience: IN
https://www.readbyqxmd.com/read/29555009/comparison-of-etomidate-benzocaine-and-ms222-anesthesia-with-and-without-subsequent-flunixin-meglumine-analgesia-in-african-clawed-frogs-xenopus-laevis
#15
Briony D Smith, Krystal J Vail, Gwendolyn L Carroll, Maggie C Taylor, Nicholas D Jeffery, Tracy H Vemulapalli, James J Elliott
Often few alternative anesthetics for exotic species are available, due to the small numbers of these animals used in research. In this study, we evaluated the depth and duration of anesthesia in Xenopus laevis after their immersion in 3 doses of etomidate (15, 22.5, and 30 mg/L) and in 3 doses of benzocaine (0.1%, 0.5%, and 1%) compared with the 'gold standard,' tricaine methanesulfonate (MS222; 2 g/L). We then chose an optimal dose for each alternative anesthetic according to induction time, duration of surgical plane, and time to complete recovery...
March 1, 2018: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/29506861/prospective-assessment-of-follicular-growth-and-the-oocyte-cohort-after-ovarian-stimulation-for-fertility-preservation-in-90-cancer-patients-versus-180-matched-controls
#16
Christine Decanter, Geoffroy Robin, Audrey Mailliez, Julien Sigala, Franck Morschhauser, Nassima Ramdane, Patrick Devos, Didier Dewailly, Brigitte Leroy-Martin, Laura Keller
A lower number of metaphase II oocytes eligible for vitrification after controlled stimulation in cancer patients has recently been reported, suggesting that cancer may impair the dynamics and quality of follicular growth. In this prospective, non-interventional study, the pattern of follicular growth and oocyte cohort after ovarian stimulation in cancer patients was analysed. Ninety cancer patients, recruited before starting chemotherapy, were compared with 180 time- and age-matched healthy controls undergoing intracytoplasmic sperm injection...
May 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29488818/effects-of-oral-contraceptives-on-ovulation-induction-in-in-vitro-fertilization-patients-with-premature-ovarian-insufficiency
#17
M Chen, H Han, Y Chuai, M Hao, M Shu, W Shang
OBJECTIVE: To report a case series of in vitro fertilization patients with premature ovarian insufficiency, who were treated with oral contraceptives to reduce follicle stimulating hormone levels. METHOD: This was a consecutive case series in a tertiary teaching hospital in China. Twenty-two women with refractory and idiopathic premature ovarian insufficiency were administered a drospirenone/ethinylestradiol oral contraceptive orally. The main outcome measures were the number of oocytes retrieved and the number of embryos frozen...
June 2018: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29482665/study-on-the-relationship-between-expression-patterns-of-cocaine-and-amphetamine-regulated-transcript-and-hormones-secretion-in-porcine-ovarian-follicles
#18
Pengfei Li, Jinzhu Meng, Jiongjie Jing, Qingling Hao, Zhiwei Zhu, Jianbo Yao, Lihua Lyu
BACKGROUND: Cocaine-and amphetamine regulated transcript (CART) is an endogenous neuropeptide, which is widespread in animals, plays a key role in regulation of follicular atresia in cattle and sheep. Among animal ovaries, CART mRNA was firstly found in the cattle ovaries. CART was localized in the antral follicles oocytes, granulosa and cumulus cells by immunohistochemistry and in situ hybridization. Further research found that secretion of E2 was inhibited in granulosa cells with a certain dose of CART, the effect depends on the stage of cell differentiation, suggesting that CART could play a crucial role in regulating follicle atresia...
February 26, 2018: Biological Research
https://www.readbyqxmd.com/read/29456560/the-effect-of-testosterone-gel-on-fertility-outcomes-in-women-with-a-poor-response-in-in-vitro-fertilization-cycles-a-pilot-randomized-clinical-trial
#19
Nasrin Saharkhiz, Shahrzad Zademodares, Saghar Salehpour, Sedighe Hosseini, Leyla Nazari, Hatav Ghasemi Tehrani
Background: In this study, the effect of testosterone gel administration during ovulation induction on the fertility rate was examined in women with a poor ovarian response in in vitro fertilization (IVF) cycles. Materials and Methods: The current study is a single-blinded, randomized clinical trial. Patients who met inclusion (Bologna) criteria were placed in the antagonist cycle group. The patients were randomly divided into two groups each included 25 participants treated with a placebo (lubricant gel, the controls) and testosterone gel (intervention)...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29453798/melatonin-protects-against-defects-induced-by-deoxynivalenol-during-mouse-oocyte-maturation
#20
Mei Lan, Jun Han, Meng-Hao Pan, Xiang Wan, Zhen-Nan Pan, Shao-Chen Sun
Deoxynivalenol (DON) is one of the most prevalent fusarium mycotoxins in feedstuff and food. DON causes detrimental effects on human and animal reproductive systems by inducing oxidative stress and apoptosis. However, melatonin is a multifunctional endogenous hormone that plays crucial roles in the development of animal germ cells and embryos as a robust deoxidizer. In this study, we explored the effects of melatonin on the DON exposure mouse oocytes. Our in vitro and in vivo results showed that DON adversely affected mouse oocyte maturation and early embryo cleavage, while melatonin administration ameliorated the toxic effects of DON...
February 17, 2018: Journal of Pineal Research
keyword
keyword
56587
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"