Results 51 to 60 of about 10,170 (214)

Multi‐Omics Analysis Reveals Coordinated Adaptations in Genes, Metabolism, and Gut Microbiota Underpinning Herbivory in Lordiphosa Flies

open access: yesIntegrative Zoology, EarlyView.
Multi‐omics analysis reveals that herbivorous adaptation in Lordiphosa flies arises from coordinated interactions across the genome, transcriptome, and gut microbiota: genomic expansions of detoxification (e.g., cytochrome P450s) and carbohydrate metabolism gene families, transcriptomic upregulation of energy pathways like lipid oxidation and ...
Run Guo   +4 more
wiley   +1 more source

Ultrastructure of spermiogenesis and the spermatozoon in cyclophyllidean cestodes [PDF]

open access: yes, 2015
Podeu consultar el llibre complet a: http://hdl.handle.net/2445/67430The usefulness of the ultrastructural characters of spermiogenesis and of the spermatozoon in the interpretation of relationships in the Platyhelminthes has been widely demonstrated ...
Miquel Colomé, Jordi   +2 more
core  

Essential Role of Histone Replacement and Modifications in Male Fertility

open access: yesFrontiers in Genetics, 2019
Spermiogenesis is a complex cellular differentiation process that the germ cells undergo a distinct morphological change, and the protamines replace the core histones to facilitate chromatin compaction in the sperm head. Recent studies show the essential
Tong Wang   +5 more
doaj   +1 more source

The use of deidentified organ donor testes for research

open access: yesAndrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova   +4 more
wiley   +1 more source

Sperm characteristics as additional evidence of close relationship between Lebiasina and Piabucina (Characiformes: Lebiasinidae: Lebiasininae)

open access: yesNeotropical Ichthyology
Spermiogenesis and spermatozoa of representatives of the genera Lebiasina and Piabucinaare described. Spermiogenesis is quite similar among all analyzed species of these genera and is identified as Type II.
Júlio César de O. Santana   +3 more
doaj   +1 more source

Iqcg is essential for sperm flagellum formation in mice. [PDF]

open access: yesPLoS ONE, 2014
Mammalian spermatogenesis comprises three successive phases: mitosis phase, meiosis phase, and spermiogenesis. During spermiogenesis, round spermatid undergoes dramatic morphogenesis to give rise to mature spermatozoon, including the condensation and ...
Ren-Ke Li   +10 more
doaj   +1 more source

The role of iron in normal and impaired testicular function

open access: yesAndrology, EarlyView.
Abstract Iron plays a critical role in testicular physiology, impacting spermatogenesis, testosterone production, and overall testicular function. Iron homeostasis is maintained through systemic and cellular regulatory mechanisms, including hepcidin‐mediated systemic iron control and the iron‐responsive element/iron regulatory protein (IRE/IRP) system ...
Aileen Harrer   +2 more
wiley   +1 more source

Nuclear regulator Pygo2 controls spermiogenesis and histone H3 acetylation [PDF]

open access: yes, 2008
Mammalian spermiogenesis, a process where haploid male germ cells differentiate to become mature spermatozoa, entails dramatic morphological and biochemical changes including remodeling of the germ cell chromatin.
Sassone-Corsi, Paolo   +15 more
core   +3 more sources

Targeting and fusion proteins during mammalian spermiogenesis [PDF]

open access: yes, 2001
Regulated exocytosis is controlled by internal and external signals. The molecular machinery controlling the sorting from the newly synthesized vesicles from the Golgi apparatus to the plasma membrane play a key role in the regulation of both the number ...
JOÃO RAMALHO-SANTOS   +3 more
core   +1 more source

Wolbachia Induces Structural Defects Harmful to Drosophila simulans Riverside Spermiogenesis

open access: yesCells, 2023
The relationship between cytoplasmic incompatibility and the obligate intracellular alphaproteobacteria Wolbachia has for a long time been reported.
Maria Giovanna Riparbelli   +2 more
doaj   +1 more source

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