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Role of GPR55 receptor in bovine sperm capacitation.
Andrology
January 2025
Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Facultad de Medicina-Universidad de Buenos Aires (UBA/CONICET), Buenos Aires, Argentina.
Background: Endocannabinoids like anandamide (AEA), among other lipids, are recognized signaling molecules that participate in reproductive events.
Objectives: Our aims were to characterize orphan G protein-coupled receptor (GPR55) presence; investigate GPR55 activation by AEA and determine GPR55 role in the bovine sperm function.
Materials And Methods: GPR55 presence was assessed by immunocytochemistry.
Germinative dynamic, seasonality, and polyandry: A dive in neotropical point-belly frog reproduction.
Anat Rec (Hoboken)
December 2024
Department of Structural and Functional Biology, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo, Brazil.
Complexity and reproductive plasticity are very well-known characteristics of anurans. The group is being continuously explored taxonomically and phylogenetically, which leads to a great potential diversity not yet uncovered. This is particularly evident due to the lack of investigation regarding species-specific traits, even the ones well distributed in the lineages as polyandry.
View Article and Find Full Text PDFMitochondrial epigenetics brings new perspectives on doubly uniparental inheritance in bivalves.
Sci Rep
December 2024
Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada.
Mitochondrial epigenetics, particularly mtDNA methylation, is a flourishing field of research. MtDNA methylation appears to play multiple roles, including regulating mitochondrial transcription, cell metabolism and mitochondrial inheritance. In animals, bivalves with doubly uniparental inheritance (DUI) of mitochondria are the exception to the rule of maternal mitochondrial inheritance since DUI also involve a paternal mtDNA transmitted from the father to sons.
View Article and Find Full Text PDFMitochondrial dysfunction signatures in idiopathic primary male infertility: a validated proteomics-based diagnostic approach.
Front Reprod Health
December 2024
Glickman Urological Institute, Cleveland Clinic Foundation, Cleveland, OH, United States.
Research Question: Male infertility accounts for almost half of all infertility cases worldwide, with idiopathic male infertility accounting for up to 30% of the cases. Sperm proteomics has revealed critical molecular pathway changes in men with infertility. However, the sperm mitochondrial proteome remains poorly understood.
View Article and Find Full Text PDFA homozygous loss-of-function mutation in CEP250 is associated with acephalic spermatozoa syndrome in humans.
Andrology
December 2024
Reproductive Medicine Center, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
Background: The presence of predominantly headless sperm in semen is a hallmark of acephalic spermatozoa syndrome, which is primarily caused by gene mutations in humans.
Purpose: To identify genetic causes for acephalic spermatozoa syndrome.
Methods: Polymerase chain reaction and Sanger sequencing were performed to define mutations in SUN5 and PMFBP1.
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