Results 41 to 50 of about 16,641 (207)

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source

Testis size, peripheral concentrations of testosterone, semen criteria and Sertoli and germ cell numbers in Nelore bulls

Semina: Ciências Agrárias, 2014
A study was conducted to evaluate the associations among testis size, testosterone concentrations, semen parameters and aspects of spermatogenesis in Nelore bulls (n = 28). Testis size was measured from 10 to 29 months of age.
Erika Bezerra de Menezes, Claudia Roberta de Andrade, José Hyrton Carneiro-Júnior, Glaycione Costa Rodrigues , Raimundo Martins Filho , Airton Alencar de Araújo, Arlindo Alencar Araripe Moura   +6 more
doaj   +1 more source

A ubiquitin ligase complex regulates caspase activation during sperm differentiation in Drosophila. [PDF]

PLoS Biology, 2007
In both insects and mammals, spermatids eliminate their bulk cytoplasm as they undergo terminal differentiation. In Drosophila, this process of dramatic cellular remodeling requires apoptotic proteins, including caspases. To gain further insight into the
Eli Arama, Maya Bader, Gabrielle E Rieckhof, Hermann Steller   +3 more
doaj   +1 more source

Heat stress in spermatogenesis: a redox‐dependent decision network linking ROS, autophagy, and regulated cell death

Biological Reviews, EarlyView.
ABSTRACT Heat stress (HS) is an increasing threat to male reproductive health, disrupting spermatogenesis through complex and interdependent cellular responses within the seminiferous epithelium. Although excessive reactive oxygen species (ROS) production is a hallmark of HS, ROS also act as central regulators of cell fate decisions beyond their role ...
Ribrio Ivan Tavares Pereira Batista
wiley   +1 more source

PENURUNAN JUMLAH SPERMATOSIT PAKITEN DAN SPERMATID TUBULUS SEMINIFERUS TESTIS PADA MENCIT (MUS MUSCULUS) YANG DIPAPARKAN ASAP ROKOK

Jurnal Biologi Udayana, 2014
This study was conducted to observe the effect of cigarette smoke exposure on spermatogenesis of male mice. The animals used in this study were 63 male mice, aged 12 weeks. They were divided randomly into 3 groups, each group consisted of 21 mice.
A.A.Sg A. SUKMANINGSIH
doaj  

Subcellular evidence for biogenesis of autophagosomal membrane during spermiogenesis in vivo

Frontiers in Physiology, 2016
Although autophagosome formation has attracted substantial attention, the origin and the source of the autophagosomal membrane remains unresolved.
Yufei Huang, Ping Yang, Tengfei Liu, Hong Chen, Xiaoya Chu, Nisar Ahmad, Qian Zhang, Quanfu Li, Lisi Hu, Yi Liu, Qiusheng Chen   +10 more
doaj   +1 more source

The Influence of Drosophila Spire and Myosin V During Mid‐Oogenesis Is Independent of Their Direct Interaction

Cytoskeleton, EarlyView.
ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong, Hannah M. Bailey, Emma Carley, Michelle Panzica, Merin Rixen, Neil Billington, Rong Liu, Margot E. Quinlan   +7 more
wiley   +1 more source

Sphingomyelins and ceramides with VLCPUFAs are excluded from low-density raft-like domains in differentiating spermatogenic cells

Journal of Lipid Research, 2017
Rat spermatogenic cells contain sphingomyelins (SMs) and ceramides (Cers) with very long-chain PUFAs (VLCPUFAs) in nonhydroxylated (n-V) and 2-hydroxylated (h-V) forms. How these atypical species distribute among membrane fractions during differentiation
Florencia X. Santiago Valtierra, Melina V. Mateos, Marta I. Aveldaño, Gerardo M. Oresti   +3 more
doaj   +1 more source

Synergistic Toxicity of Low‐Concentration Metal Mixture on Male Rats: Reproductive, Renal, and Hepatic Effects

Environmental Toxicology, EarlyView.
ABSTRACT Mining plays a crucial role in economic development, but improper management can lead to severe environmental degradation. Particularly for iron ore, mining generates vast amounts of tailings often stored in unstable dams. This study aims to investigate the toxicological impacts of environmentally relevant concentrations of metals mixture ...
Kalinka Helóra Gomes de Almeida, Thalita Tofanin Sargiani D'Assumpção, Ana Priscila Gomes Silva, Carolina Rocha Moreira de Oliveira, Tailisi Hoppe Trevizani, Rubens Cesar Lopes Figueira, Lucas Buruaem Moreira, Juliana Elaine Perobelli   +7 more
wiley   +1 more source

Development of a procedure for isolation, identification and quality assessment of bovine spermatids and evaluation of their fertilizing ability in vitro

Frontiers in Bioengineering and Biotechnology
Intracytoplasmic spermatid injection into oocytes has limited efficiency in cattle, with no offspring generated so far, partly due to ambiguous spermatid identification.
Rolando Pasquariello, Francesca Di Filippo, Sai Kamal Nag Bonumallu, Fernanda Fagali Franchi, Ramona Pistucci, Federica Franciosi, Valentina Lodde, Alessandra Iannuzzi, Alberto Maria Luciano, Tiziana A. L. Brevini, Fulvio Gandolfi   +10 more
doaj   +1 more source