Results 31 to 40 of about 356,741 (316)

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

Population Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier, Christophe Barbraud, Maxime Amy, Sabine Orlowski, Jean Hivert, Gabrielle Dicque, Matthieu Le Corre   +6 more
wiley   +1 more source

Prediction of the lower serum anti-Müllerian hormone threshold for ovarian stimulation prior to in-vitro fertilization using the Elecsys® AMH assay: a prospective observational study

Reproductive Biology and Endocrinology, 2019
Background In assisted reproductive technology, prediction of treatment failure remains a great challenge. The development of more sensitive assays for measuring anti-Müllerian hormone (AMH) has allowed for the possibility to investigate if a lower ...
A. G. Grynnerup, K. Løssl, F. Pilsgaard, S. A. Lunding, M. Storgaard, J. W. Bogstad, L. Prætorius, A. Zedeler, L. Bungum, A. Nyboe Andersen, A. Pinborg   +10 more
doaj   +1 more source

Effect of Microfluidic Sperm Separation vs. Standard Sperm Washing Processes on Laboratory Outcomes and Clinical Pregnancy Rates in an Unselected Patient Population

Reproductive Medicine, 2021
A prospective, multicenter, randomized, sibling oocyte study was conducted with 86 couples to evaluate if a microfluidic sperm separation device improved ICSI sperm selection and subsequent cycle outcomes of fertilization, blastocyst utilization, ploidy,
Chelsey A. Leisinger, Glen Adaniya, Melanie R. Freeman, Erica J. Behnke, Martha Aguirre, Matthew D. VerMilyea, Mitchel C. Schiewe   +6 more
doaj   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Embryo utilisation rate and transferable embryo to oocyte ratio correlate positively with livebirth rate but negatively with oocyte number: analysis of 14,156 fresh IVF/ICSI cycles

Journal of Ovarian Research
Background The live birth rates (LBRs) do not rise after a certain number of oocytes are collected in fresh IVF cycles. Although the detrimental effect of high ovarian response on the endometrium has been recognised, the effect of high oocyte yield on ...
Adrija Kumar Datta, Geeta Nargund, Martin Wilding, Sam Dobson, Stuart Campbell   +4 more
doaj   +1 more source

Angiogenic potency evaluation of cell therapy candidates by a novel application of the in vitro aortic ring assay

Stem Cell Research & Therapy, 2017
Background Due to limitations of current angiogenesis assays, we aimed to develop a novel application of the rat aortic ring assay to assess the angiogenic potential of mesenchymal stromal cells (MSCs).
Farwah Iqbal, Peter Szaraz, Matthew Librach, Andrée Gauthier-Fisher, Clifford L. Librach   +4 more
doaj   +1 more source

A comprehensive assessment of predictors of fertility outcomes in men with non-obstructive azoospermia undergoing microdissection testicular sperm extraction

Reproductive Biology and Endocrinology, 2020
Background Microdissection testicular sperm extraction (microTESE) in men with non-obstructive azoospermia (NOA) is the procedure that results in the highest number of sperm cells retrieved for in vitro fertilization (IVF).
Parviz K. Kavoussi, Brady T. West, Shu-Hung Chen, Caitlin Hunn, Melissa S. Gilkey, G. Luke Machen, Keikhosrow M. Kavoussi, Amy Esqueda, J. David Wininger, Shahryar K. Kavoussi   +9 more
doaj   +1 more source

#58 : Relationship Between E-Cigarettes (Vaping) Habits and Semen Parameters Among Patient Attending Sabahcare Fertility Centre

Fertility & Reproduction, 2023
Background and Aims: Exposure to nicotine is known to reduce sperm count and motility as well as increasing abnormal parameters. This study aimed to determine the differences of Seminal Fluid Analysis (SFA) between e-cigarettes users (vaping) and non ...
Jessy Mee Voon Chiang, Mohd Taufeeq Masri, Michelle Jane Chin, Nur Asyiqin Binti Yunos, Yee Tsing Cheong, M. Hatta Tarmizi   +5 more
doaj   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Surfaceome: a new era in the discovery of immune evasion mechanisms of circulating tumor cells

Molecular Oncology, EarlyView.
In the era of immunotherapies, many patients either do not respond or eventually develop resistance. We propose to pave the way for proteomic analysis of surface‐expressed proteins called surfaceome, of circulating tumor cells. This approach seeks to identify immune evasion mechanisms and discover potential therapeutic targets. Circulating tumor cells (
Doryan Masmoudi, Jérome Vialaret, Christophe Hirtz, Catherine Alix‐Panabières   +3 more
wiley   +1 more source