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Assisted Reproductive Biology

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https://www.readbyqxmd.com/read/29790373/non-clinical-studies-of-progesterone
#1
R Sitruk-Ware
Progesterone is a steroid hormone that is essential for the regulation of reproductive function. Progesterone has been approved for several indications including the treatment of anovulatory menstrual cycles, assisted reproductive technology, contraception during lactation and, when combined with estrogen, for the prevention of endometrial hyperplasia in postmenopausal hormonal therapy. In addition to its role in reproduction, progesterone regulates a number of biologically distinct processes in other tissues, particularly in the nervous system...
May 23, 2018: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29785740/expression-levels-of-breast-cancer-related-gas5-and-lsinct5-lncrnas-in-cancer-free-breast-tissue-molecular-associations-with-age-at-menarche-and-obesity
#2
Yaser Mansoori, Mohammad Bagher Tabei, Alireza Askari, Pantea Izadi, Abdolreza Daraei, Milad Bastami, Mohammad Mehdi Naghizadeh, Ziba Nariman-Saleh-Fam, Behnam Mansoori, Javad Tavakkoly-Bazzaz
Long noncoding RNAs (lncRNAs) constitute a major class of the human transcriptome which play crucial roles in the key biological processes of both normal and malignant breast cells. Although the aberrant expression of lncRNAs has been well-documented in breast cancer (BC), little is currently known about the association between their expression levels in the breast tissue of healthy women and BC risk factors, especially the reproductive or demographic characteristics that are among the most well-known BC risk modifiers...
May 21, 2018: Breast Journal
https://www.readbyqxmd.com/read/29773834/embryonic-pou5f1-is-required-for-expanded-bovine-blastocyst-formation
#3
Bradford W Daigneault, Sandeep Rajput, George W Smith, Pablo J Ross
POU5F1 is a transcription factor and master regulator of cell pluripotency with indispensable roles in early embryo development and cell lineage specification. The role of embryonic POU5F1 in blastocyst formation and cell lineage specification differs between mammalian species but remains completely unknown in cattle. The CRISPR/Cas9 system was utilized for targeted disruption of the POU5F1 gene by direct injection into zygotes. Disruption of the bovine POU5F1 locus prevented blastocyst formation and was associated with embryonic arrest at the morula stage...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29743852/n1-benzenesulfonyl-2-pyrazoline-hybrids-in-neurological-disorders-syntheses-biological-screening-and-computational-studies
#4
Avinash C Tripathi, Savita Upadhyay, Sarvesh Paliwal, Shailendra K Saraf
A novel series of 1,3,5-trisubstituted-2-pyrazolines (5a-5t ) was prepared via Claisen Schmidt condensation, followed by heterocyclization with hydrazine hydrate, substitution of N1 hydrogen of 2-pyrazoline nucleus with 4-chlorobenzenesulfonylchloride, applying conventional and green chemistry approaches. Among the two, microwave assisted organic synthesis (MAOS) emerged as a better synthetic tool in terms of faster reaction rate and high yield. Various physicochemical and spectral studies were conducted to characterize the synthesized derivatives including- IR, Mass, 1 H-NMR, 13 C-NMR and elemental analysis...
2018: EXCLI Journal
https://www.readbyqxmd.com/read/29743320/prospective-longitudinal-study-of-the-pregnancy-dna-methylome-the-us-pregnancy-race-environment-genes-preg-study
#5
Dana M Lapato, Sara Moyer, Emily Olivares, Ananda B Amstadter, Patricia A Kinser, Shawn J Latendresse, Colleen Jackson-Cook, Roxann Roberson-Nay, Jerome F Strauss, Timothy P York
PURPOSE: The goal of the Pregnancy, Race, Environment, Genes study was to understand how social and environmental determinants of health (SEDH), pregnancy-specific environments (PSE) and biological processes influence the timing of birth and account for the racial disparity in preterm birth. The study followed a racially diverse longitudinal cohort throughout pregnancy and included repeated measures of PSE and DNA methylation (DNAm) over the course of gestation and up to 1 year into the postpartum period...
May 9, 2018: BMJ Open
https://www.readbyqxmd.com/read/29722907/use-of-somatic-cell-banks-in-the-conservation-of-wild-felids
#6
REVIEW
Érika A Praxedes, Alana A Borges, Maria V O Santos, Alexsandra F Pereira
The conservation of biological resources is an interesting strategy for the maintenance of biodiversity, especially for wild felids who are constantly threatened with extinction. For this purpose, cryopreservation techniques have been used for the long-term storage of gametes, embryos, gonadal tissues, and somatic cells and tissues. The establishment of these banks has been suggested as a practical approach to the preservation of species and, when done in tandem with assisted reproductive techniques, could provide the means for reproducing endangered species...
May 3, 2018: Zoo Biology
https://www.readbyqxmd.com/read/29696934/-research-progress-of-acupuncture-and-moxibustion-for-endometrial-receptivity-in-recent-10-years
#7
Zeqi Dai, Weiwei Sun, Ruihua Zhao
The research of acupuncture and moxibustion for endometrial receptivity in recent 10 years was reviewed. CNKI and PubMed databases were retrieved with "acupuncture" "moxibustion" and "endometrial receptivity" as key words. The retrieving time was from January of 2007 through December of 2016. As a result, 63 relevant papers were collected and 28 papers regarding clinical and experimental researches of acupuncture for endometrial receptivity were included into analysis. It was found that acupuncture and moxibustion could improve endometrial morphology (including the expression of pinopodes, endometrial thickness and the rate of endometrial type A), reduce the endometrial microcirculation (including endometrial pulsatility index, resistance index and hemodynamic index), increase the levels of estrogen and progesterone and the expressions of their receptors, and regulate the expression of molecular biological regulator (such as integrin, leukemia inhibitory factor, vascular endothelial growth factor and HOXA10)...
April 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29687472/conscience-claims-metaphysics-and-avoiding-an-lgbt-eugenic
#8
Abram Brummett
Novel assisted reproductive technologies (ART) are poised to present our society with strange new ethical questions, such as whether lesbian, gay, bisexual, and transgender (LGBT) couples should be allowed to produce children biologically related to both parents, or whether trans-women who want to experience childbirth should be allowed to receive uterine transplants. Clinicians opposed to offering such technologies to LGBT couples on moral grounds are likely to seek legal shelter through the conscience clauses enshrined in U...
April 23, 2018: Bioethics
https://www.readbyqxmd.com/read/29673874/origins-of-lifetime-health-around-the-time-of-conception-causes-and-consequences
#9
REVIEW
Tom P Fleming, Adam J Watkins, Miguel A Velazquez, John C Mathers, Andrew M Prentice, Judith Stephenson, Mary Barker, Richard Saffery, Chittaranjan S Yajnik, Judith J Eckert, Mark A Hanson, Terrence Forrester, Peter D Gluckman, Keith M Godfrey
Parental environmental factors, including diet, body composition, metabolism, and stress, affect the health and chronic disease risk of people throughout their lives, as captured in the Developmental Origins of Health and Disease concept. Research across the epidemiological, clinical, and basic science fields has identified the period around conception as being crucial for the processes mediating parental influences on the health of the next generation. During this time, from the maturation of gametes through to early embryonic development, parental lifestyle can adversely influence long-term risks of offspring cardiovascular, metabolic, immune, and neurological morbidities, often termed developmental programming...
April 16, 2018: Lancet
https://www.readbyqxmd.com/read/29574151/oviduct-morphology-and-estrogen-receptors-er%C3%AE-and-er%C3%AE-expression-in-captive-chinchilla-lanigera-hystricomorpha-chinchillidae
#10
Mariana Machado-Neves, Wiviane Alves de Assis, Mardelene Geísa Gomes, Cleida Aparecida de Oliveira
Chinchilla lanigera is a hystricomorph rodent from South America whose reproductive biology presents particular characteristics that distinguishes it from other Rodentia species, such as low reproductive rate, seasonal breeding pattern, and long estrous cycle. Nevertheless, reproductive features in female chinchillas are still poorly investigated, with a scarce knowledge concerning the estrous cycle and the histology of reproductive organs. In this study, we investigate the morphology, histomorphometry, secretory activity, and immunolocalization of estrogen receptors ERα and ERβ in oviducts of nulliparous chinchillas, euthanized at fall season in Brazil...
March 22, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29554095/the-mixture-of-cashew-nut-shell-liquid-and-castor-oil-results-in-an-efficient-larvicide-against-aedes-aegypti-that-does-not-alter-embryo-fetal-development-reproductive-performance-or-dna-integrity
#11
Juliana Miron Vani, Maria Tereza Ferreira Duenhas Monreal, Sarah Alves Auharek, Andréa Luiza Cunha-Laura, Eduardo José de Arruda, Alessandra Ramos Lima, Cicera Maria da Silva, Andréia Conceição Milan Brochado Antoniolli-Silva, Dênis Pires de Lima, Adilson Beatriz, Rodrigo Juliano Oliveira
Dengue fever, chikungunya fever and Zika virus are epidemics in Brazil that are transmitted by mosquitoes, such as Aedes aegypti or Aedes albopictus. The liquid from shells of cashew nuts is attractive for its important biological and therapeutic activities, which include toxicity to mosquitoes of the genus Aedes. The present study evaluated the effects of a mixture of surfactants from natural cashew nutshell liquid and castor oil (named TaLCC-20) on the mortality of larvae and on the reproductive performance, embryonic and fetal development and genetic stability of Swiss mice...
2018: PloS One
https://www.readbyqxmd.com/read/29492315/maintenance-of-mest-imprinted-methylation-in-blastocyst-stage-mouse-embryos-is-less-stable-than-other-imprinted-loci-following-superovulation-or-embryo-culture
#12
REVIEW
Brenna A M Velker, Michelle M Denomme, Robert T Krafty, Mellissa R W Mann
Assisted reproductive technologies are fertility treatments used by subfertile couples to conceive their biological child. Although generally considered safe, these pregnancies have been linked to genomic imprinting disorders, including Beckwith-Wiedemann and Silver-Russell Syndromes. Silver-Russell Syndrome is a growth disorder characterized by pre- and post-natal growth retardation. The Mest imprinted domain is one candidate region on chromosome 7 implicated in Silver-Russell Syndrome. We have previously shown that maintenance of imprinted methylation was disrupted by superovulation or embryo culture during pre-implantation mouse development...
July 2017: Environmental Epigenetics
https://www.readbyqxmd.com/read/29470702/the-mutual-benefits-of-research-in-wild-animal-species-and-human-assisted-reproduction
#13
REVIEW
P Comizzoli, E E Paulson, L K McGinnis
Studying the reproductive biology of wild animal species produces knowledge beneficial to their management and conservation. However, wild species also share intriguing similarities in reproductive biology with humans, thereby offering alternative models for better understanding the etiology of infertility and developing innovative treatments. The purpose of this review is to raise awareness in different scientific communities about intriguing connections between wild animals and humans regarding infertility syndromes or improvement of fertility preservation...
February 22, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29462946/a-biochemical-approach-to-detect-oxidative-stress-in-infertile-women-undergoing-assisted-reproductive-technology-procedures
#14
Matteo Becatti, Rossella Fucci, Amanda Mannucci, Victoria Barygina, Marco Mugnaini, Luciana Criscuoli, Claudia Giachini, Francesco Bertocci, Rita Picone, Giacomo Emmi, Paolo Evangelisti, Francesca Rizzello, Cinzia Cozzi, Niccolò Taddei, Claudia Fiorillo, Maria Elisabetta Coccia
Oxidative stress plays a major role in critical biological processes in human reproduction. However, a reliable and biologically accurate indicator of this condition does not yet exist. On these bases, the aim of this study was to assess and compare the blood and follicular fluid (FF) redox status of 45 infertile subjects (and 45 age-matched controls) undergoing in vitro fertilization (IVF), and explore possible relationships between the assessed redox parameters and IVF outcomes. Reactive Oxygen Species (ROS) production, assessed by flow cytometry analysis in blood leukocytes and granulosa cells, significantly increased (p < 0...
February 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29460468/review-of-the-role-of-leptin-in-the-regulation-of-male-reproductive-function
#15
REVIEW
J Zhang, M Gong
Since discovered in 1994, leptin has been thought to be a pleiotropic hormone that regulates food intake, controls energy balance in the body and influences multiple tissues in the body. Leptin plays an important mediating role in the regulation of neuroendocrine and can transmit the nutritional status signals to the reproductive-related central nervous system. Many studies have shown that leptin may play an important role in the control of reproductive function. Leptin can act on all levels of the hypothalamus-pituitary-gonadal (HPG) axis and may have local effects on the function of testis and spermatogenesis...
February 20, 2018: Andrologia
https://www.readbyqxmd.com/read/29460304/sperm-retrieval-by-microdissection-testicular-sperm-extraction-and-intracytoplasmic-sperm-injection-outcomes-in-nonobstructive-azoospermic-patients-with-klinefelter-syndrome
#16
C Ozer, P Caglar Aytac, M R Goren, S Toksoz, U Gul, T Turunc
Klinefelter syndrome is the most frequent chromosomal abnormality in patients with nonobstructive azoospermia. The development of advanced assisted reproductive techniques, such as testicular sperm extraction and intracytoplasmic sperm injection, has provided the possibility of biological fathering in nonobstructive azoospermic patients with Klinefelter syndrome. We aimed to evaluate our sperm retrieval rate by microdissection testicular sperm extraction and to analyse the intracytoplasmic sperm injection outcomes in these patients...
February 20, 2018: Andrologia
https://www.readbyqxmd.com/read/29460056/testicular-pirna-profile-comparison-between-successful-and-unsuccessful-micro-tese-retrieval-in-noa-patients
#17
Congcong Cao, Yujiao Wen, Xiaoli Wang, Na Fang, Shuiqiao Yuan, Xunbin Huang
PURPOSE: PIWI-interacting RNA (piRNA) is a sub-group of small RNAs about 30 nucleotides length which specifically expressed in mammalian germ cells. Although piRNAs play pivotal roles in spermatogenesis regulation, little is known in the testicular tissues of infertile men. To explore whether piRNA profile could serve as a biomarker for male infertility diagnosis in a clinic, in this study, we systematically investigated the expression profile of piRNAs in testicular tissues from the patients with non-obstructive azoospermia (NOA) between successful and unsuccessful sperm retrieval before micro-dissection testicular sperm extraction (micro-TESE)...
February 19, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29459586/risk-factors-and-immediate-neonatal-outcome-of-multiple-pregnancies-in-a-scanu-of-a-tertiary-care-hospital-bangladesh
#18
M N Islam, T Tazmin, M Siddika, M A Hossain, M A Ali, M K Bhuiyan
Multiple pregnancies are a significant risk factor for maternal and perinatal morbidity due to inherent biological risks. The present study was aimed to determine the risk factors and to evaluate the immediate neonatal outcome of multiple pregnancies. This descriptive observational study was conducted in the newly established Special Care Neonatal Unit (SCANU) of Mymensingh Medical College Hospital (MMCH), Bangladesh from January 2015 to March 2015. Total 86 newborns of multiple pregnancies who were admitted during the study period were included in the study...
January 2018: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29447472/viable-cell-culture-banking-for-biodiversity-characterization-and-conservation
#19
Oliver A Ryder, Manabu Onuma
Because living cells can be saved for indefinite periods, unprecedented opportunities for characterizing, cataloging, and conserving biological diversity have emerged as advanced cellular and genetic technologies portend new options for preventing species extinction. Crucial to realizing the potential impacts of stem cells and assisted reproductive technologies on biodiversity conservation is the cryobanking of viable cell cultures from diverse species, especially those identified as vulnerable to extinction in the near future...
February 15, 2018: Annual Review of Animal Biosciences
https://www.readbyqxmd.com/read/29430170/analytical-characterization-of-recombinant-hcg-and-comparative-studies-with-reference-product
#20
Rajamannar Thennati, Sanjay Kumar Singh, Nitin Nage, Yena Patel, Sandip Kumar Bose, Vinod Burade, Ranjit Sudhakar Ranbhor
Introduction: Regulatory agencies recommend a stepwise approach for demonstrating biosimilarity between a proposed biosimilar and reference biological product emphasizing for functional and structural characterization to trace if there is any difference which may impact safety and efficacy. We studied the comparative structural and biological attributes of recombinant human chorionic gonadotropin (rhCG), SB005, with reference product, Ovidrel® and Ovitrelle® . Recombiant hCG was approved in 2000 by the US Food and Drug Administration for the induction of final follicular maturation, early luteinization in infertile women as part of assisted reproductive technology program...
2018: Biologics: Targets & Therapy
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