Results 51 to 60 of about 9,285 (298)

Review of Sustainable Cryopreservation and Above-Freezing Storage Solutions of European Honey Bee Apis mellifera Drone Semen

Environmental and Climate Technologies, 2023
The European honey bee Apis mellifera is the main pollinator for most crops used for human consumption. However, a number of diseases, parasites, pesticides and other factors that generally result in the widely described colony collapse disorder weakens ...
Smilga-Spalvina Agnese, Spalvins Kriss, Veidenbergs Ivars   +2 more
doaj   +1 more source

Distribution of Semen Parameters Among Adolescent Males Undergoing Fertility Preservation in a Multicenter International Cohort

, 2019
To determine the distribution of semen parameters among adolescent and adult males presenting for fertility preservation. A retrospective, cross-sectional cohort study of adolescent males age 11-19 who underwent semen analysis for fertility preservation ...
Leong, Joon Yau, Lamb, Dolores J, Patel, Amir S, Cervellione, Raimondo M, Thirumavalavan, Nannan, Ramasamy, Ranjith, Halpern, Joshua A, Ibrahim, Emad, Keene, David J.B, Kohn, Taylor P, Brackett, Nancy L   +10 more
core   +1 more source

Implications of sperm banking for health-related quality of life up to 1 year after cancer diagnosis [PDF]

, 2013
Background: Sperm banking is recommended for all men diagnosed with cancer where treatment is associated with risk of longterm gonadatoxicity, to offer the opportunity of fatherhood and improved quality of life.
Pacey, Allan, Stark, D., A Pacey, C Eiser, Morris, K., Rowe, Richard, Merrick, Hannah, Merrick, H., Arden-Close, E., Morris, Kate, R Rowe, Eiser, Christine, Arden-Close, Emily, Stark, Daniel, Pacey, A., Rowe, R., Eiser, C., K Morris, D Stark, H Merrick, E Arden-Close, Pacey, A.; id_orcid   +21 more
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

Effect of different extenders on ram sperm traits during storage

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2012
The aim of the study was to test commercial extenders used for short-term and long-term sperm preservation. Semen was collected in the reproduction season, i.e. from June to December.
Zdeňka Hegedűšová, Ladislav Štolc, František Louda, Libor Čunát, Jan Vejnar   +4 more
doaj   +1 more source

Role of oxidative stress and antioxidants in domestic and non-domestic cat spermatozoa [PDF]

, 2010
Living cells, including spermatozoa, stored under aerobic conditions require oxygen to support their normal metabolism. Excessive levels of metabolites (reactive oxygen species; ROS) can cause cell damage or lipid peroxidation.
Thuwanut, Paweena
core  

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Effect of chitosan on buck semen quality and semen plasma metabolites during low-temperature storage

Frontiers in Veterinary Science
BackgroundOptimizing buck semen preservation techniques can significantly advance the goat industry. This study aimed to investigate the effects of chitosan on sperm quality and seminal plasma metabolite profiles in bucks during low-temperature storage ...
Meijun Song, Meijun Song, Bingke Jia, Bingke Jia, Dinghui Dai, Dinghui Dai, Xiaoli Xu, Xiaoli Xu, Jiaxue Cao, Jiaxue Cao, Jiazhong Guo, Jiazhong Guo, Linjie Wang, Linjie Wang, Tao Zhong, Tao Zhong, Siyuan Zhan, Siyuan Zhan, Li Li, Li Li, Hongping Zhang, Hongping Zhang   +21 more
doaj   +1 more source