Results 41 to 50 of about 267,539 (298)

Sperm Competition, Sperm Numbers and Sperm Quality in Muroid Rodents

PLoS ONE, 2011
Sperm competition favors increases in relative testes mass and production efficiency, and changes in sperm phenotype that result in faster swimming speeds. However, little is known about its effects on traits that contribute to determine the quality of a whole ejaculate (i.e., proportion of motile, viable, morphologically normal and acrosome intact ...
Laura Gómez Montoto, Concepción Magaña, Maximiliano Tourmente, Juan Martín-Coello, Cristina Crespo, Juan José Luque-Larena, Montserrat Gomendio, Eduardo R S Roldan   +7 more
openaire   +4 more sources

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source

From biological marker to clinical application: the role of anti-Müllerian hormone for delayed puberty and idiopathic non-obstructive azoospermia in males

Endocrine Connections
Anti-Müllerian hormone (AMH), a biomarker secreted by Sertoli cells in the testes, has emerged as a critical indicator of male reproductive function with significant clinical application potential.
Yuanyuan Zeng, Guicheng Zhao, Yi Zheng, Xiaohui Jiang   +3 more
doaj   +1 more source

Tight junction between endothelial cells: the interaction between nanoparticles and blood vessels

Beilstein Journal of Nanotechnology, 2016
Since nanoparticles are now widely applied as food additives, in cosmetics and other industries, especially in medical therapy and diagnosis, we ask here whether nanoparticles can cause several adverse effects to human health.
Yue Zhang, Wan-Xi Yang
doaj   +1 more source

Age-specific and sex-specific reference intervals for non-fasting lipids and apolipoproteins in 7260 healthy Chinese children and adolescents measured with an Olympus AU5400 analyser: a cross-sectional study

BMJ Open, 2019
Aims Ethnic, demographic, lifestyle, genetic and environmental factors influence lipids and apolipoproteins. The aim of this study was to establish age-specific and gender-specific reference intervals for non-fasting lipids and apolipoproteins in healthy
Junjie Liu, Yanpeng Dai, Enwu Yuan, Yushan Li, Quanxian Wang, Linkai Wang, Yanhua Su   +6 more
doaj   +1 more source

Automated Sperm Immobilization for Intracytoplasmic Sperm Injection [PDF]

IEEE Transactions on Biomedical Engineering, 2011
Sperm immobilization is a requisite step in intracytoplasmic sperm injection (ICSI). Conventionally, sperm immobilization is performed manually, which entails long training hours and stringent skills. Manual sperm immobilization also has the limitation of low success rates and poor reproducibility due to human fatigue and skill variations across ...
Clement, Leung, Zhe, Lu, Navid, Esfandiari, Robert F, Casper, Yu, Sun   +4 more
openaire   +2 more sources

Multimodal Actuation and Environment Adaptive Strategies of Bio‐Inspired Micro/Nanorobots in Precision Medicine

Advanced Robotics Research, EarlyView.
An introduction for multidrive and environment‐adaptive micro/nanorobotics: design and fabrication strategies, intelligent actuation, and their applications. Various intelligent actuation approaches—magnetic, acoustic, optical, chemical, and biological—can be synergistically designed to enhance flexibility and adaptive behavior for precision medicine ...
Aiqing Ma, Han Gong, Jiacheng Ouyang, Liqi Chen, Tianfang Kang, Yiran He, Guojun Huang, Sidi Zheng, Ting Yin, Hong Pan, Lintao Cai   +10 more
wiley   +1 more source

COVID-19 Severity and Androgen Receptor Polymorphism

Biology, 2022
During the COVID-19 pandemic, the most severe form of the disease was most often seen in male patients. The aim of this study was to identify any male predispositions that could be used to predict the outcome of the disease and enable early intervention.
Alessandra Buonacquisto, Anna Chiara Conflitti, Francesco Pallotti, Antonella Anzuini, Serena Bianchini, Luisa Caponecchia, Anna Carraro, Maria Rosa Ciardi, Fabiana Faja, Cristina Fiori, Daniele Gianfrilli, Andrea Lenzi, Miriam Lichtner, Claudio Maria Mastroianni, Patrizia Pasculli, Flavio Rizzo, Pietro Salacone, Annalisa Sebastianelli, Francesco Lombardo, Donatella Paoli   +19 more
doaj   +1 more source

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

Magnetic Field Driven Microrobot Based on Hydrogels

Advanced Robotics Research, EarlyView.
Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley   +1 more source